My windows xp sp3 update pack changelog. You could also consider this a changelog for windows update.
12th December 2012 v2.0.25
Added 2753842
Added 2758857
Added 2761465
Added 2770660
Added 2779030
Added 2779562
Updated MRT to v4.15
Removed 959426 - ( Superseded by 2758857 and 968389 )
Removed 2507618 - ( Superseded by 2753842 )
Removed 2744842 - ( Superseded by 2761465 )
Removed 2756822 - ( Superseded by 2779562 )
Removed 2761226 - ( Superseded by 2779030 )
15th November 2012 v2.0.24
Added 2727528
Added 2761226
Updated MRT to v4.14
Removed 2731847 - ( Superseded by 2761226 )
10th October 2012 v2.0.23
Added 2661254
Added 2705219
Added 2712808
Added 2723135
Added 2724197
Added 2731847
Added 2736233
Added 2744842
Added 2749655
Added 2756822
Updated MRT to v4.13
Removed 2633952 - ( Superseded by 2756822 )
Removed 2685939 - ( Superseded by 2723135 )
Removed 2695962 - ( Superseded by 2736233 )
Removed 2699988 - ( Superseded by 2744842 )
Removed 2707511 - ( Superseded by 2724197 )
Removed 2718523 - ( Superseded by 2731847 )
Removed 2718704 - ( Superseded by 2661254 )
Removed 958644 - ( Superseded by 2705219 )
Removed 961501 - ( Superseded by 2712808 )
12th July 2012 v2.0.22
Added 2653956
Added 2655992
Added 2659262
Added 2676562
Added 2685939
Added 2686509
Added 2691442
Added 2695962
Added 2698365
Added 2699988
Added 2707511
Added 2718523
Added 2718704
Added 2719985
Updated MRT to v4.10
Removed 2079403 - ( Superseded by 2719985 )
Removed 2412687 - ( Superseded by 2659262 )
Removed 2570222 - ( Superseded by 2685939 )
Removed 2633171 - ( Superseded by 2707511 )
Removed 2641690 - ( Superseded by 2718704 )
Removed 2647516 - ( Superseded by 2699988 )
Removed 2660465 - ( Superseded by 2718523 )
Removed 954459 - ( Superseded by 2719985 )
Removed 973687 - ( Superseded by 2719985 )
Removed 978601 - ( Superseded by 2653956 )
15th February 2012 v2.0.21
Added 2647516
Added 2660465
Added 2661637
Updated MRT to v4.5
Removed 2541763 - ( Superseded by 2585542 )
Removed 2618444 - ( Superseded by 2647516 )
Removed 2639417 - ( Superseded by 2660465 )
Removed 971737 - ( Superseded by 2585542 )
Removed 980436 - ( Superseded by 2585542 )
12th Janurary 2012 v2.0.20
Added 2584146
Added 2585542
Added 2598479
Added 2603381
Added 2631813
Added 2646524
Updated MRT to v4.4
Removed 2567680 - ( Superseded by 2646524 )
Removed 975562 - ( Superseded by 2631813 )
15th December 2011 v2.0.19
Added 2618444
Added 2618451
Added 2619339
Added 2620712
Added 2624667
Added 2633171
Added 2633952
Added 2639417
Updated MRT to v4.3
Removed 2507938 - ( Superseded by 2567680 and 2620712 )
Removed 2508272 - ( Superseded by 2618451 )
Removed 2562937 - ( Superseded by 2618451 )
Removed 2567053 - ( Superseded by 2639417 )
Removed 2570791 - ( Superseded by 2633952 )
Removed 2586448 - ( Superseded by 2618444 )
10th November 2011 v2.0.18
Added Out-Of-Band security update 2641690
Removed 2616676 - ( Superseded by 2641690 )
8th November 2011 v2.0.17
Updated MRT to v4.2
Updated 2544893 to v2
11th October 2011 v2.0.16
Added 2564958
Added 2567053
Added 2586448
Added 2592799
Updated MRT to v4.1
Removed 2503665 - ( Superseded by 2592799 )
Removed 2555917 - ( Superseded by 2567053 )
Removed 2559049 - ( Superseded by 2586448 )
6th September 2011 v2.0.15
Added 2508272
Added 2570791
Added 2570947
Added 2616676
Updated MRT to v4.0
Removed 2443685 - ( Superseded by 2570791 )
Removed 2524375 - ( Superseded by 2616676 )
10th August 2011 v2.0.14
Added 2559049
Added 2562937
Added 2566454
Added 2567680
Added 2570222
Updated MRT to v3.22
Updated 2536276 to v2
Removed 2530548 - ( Superseded by 2559049 )
Removed 2508272 - ( Superseded by 2562937 )
12th July 2011 v2.0.13
Added 2507938
Added 2541763
Added 2555917
Updated MRT to v3.20
Removed 2121546 - ( Superseded by 2507938 )
Removed 2476687 - ( Superseded by 2507938 )
Removed 2506223 - ( Superseded by 2555917 )
Removed 980436 - ( Superseded by 2541763 )
23th June 2011 v2.0.12
Added 2476490
Added 2503665
Added 2530548
Added 2535512
Added 2536276
Added 2544521
Added 2544893
Updated MRT to v3.19
Removed 2497640 - ( Superseded by 2530548 )
Removed 2503658 - ( Superseded by 2544893 )
Removed 2511455 - ( Superseded by 2536276 )
Removed 967715
13th May 2011 v2.0.11
Updated MRT to v3.19
14th April 2011 v2.0.10
Added 2412687
Added 2485663
Added 2497640
Added 2503658
Added 2506212
Added 2506223
Added 2507618
Added 2508272
Added 2508429
Added 2509553
Added 2510581
Added 2511455
Added 2524375
Updated MRT to v3.18
Removed 2141007 - ( Superseded by 2503658 )
Removed 2259922 - ( Superseded by 2485663 )
Removed 2479628 - ( Superseded by 2506223 )
Removed 2482017 - ( Superseded by 2497640 )
Removed 2485376 - ( Superseded by 2507618 )
Removed 951748 - ( Superseded by 2509553 )
Removed 956803 - ( Superseded by 2509553 )
Removed 958869 - ( Superseded by 2412687 )
Removed 971961 - ( Superseded by 2510581 )
Removed 980195 - ( Superseded by 2508272 )
Removed 980232 - ( Superseded by 2511455 )
Removed 981349 - ( Superseded by 2510581 )
Removed 982214 - ( Superseded by 2508429 )
14th March 2011 v2.0.9
Added 2479943
Added 2481109
Added 971029
Updated MRT to v3.17
14th February 2011 v2.0.8
Added 2393802
Added 2476687
Added 2478960
Added 2478971
Added 2479628
Added 2482017
Added 2483185
Added 2485376
Updated MRT to v3.16
Removed 2286198 - ( Superseded by 2483185 )
Removed 2296199 - ( Superseded by 2485376 )
Removed 2416400 - ( Superseded by 2482017 )
Removed 2436673 - ( Superseded by 2479628 )
Removed 2467659
Removed 978037 - ( Superseded by 2476687 )
Removed 981852 - ( Superseded by 2393802 )
12th January 2011 v2.0.7
Added 2419632
Updated MRT to v3.15
18th December 2010 v2.0.6
Added 973687
Added 2296199
Added 2416400
Added 2423089
Added 2436673
Added 2440591
Added 2443105
Added 2443685
Added 2467659
Updated MRT to v3.14
Removed 950760 - ( Superseded by 2467659 )
Removed 954459 - ( Superseded by 973687 )
Removed 981957 - ( Superseded by 2436673 )
Removed 2158563 - ( Superseded by 2443685 )
Removed 2279986 - ( Superseded by 2296199 )
Removed 2360131 - ( Superseded by 2416400 )
9th November 2010 v2.0.5
Updated MRT to v3.13
19th October 2010 v2.0.4
Added 979687
Added 981957
Added 982132
Added 2158563
Added 2279986
Added 2296011
Added 2345886
Added 2360131
Added 2360937
Added 2378111
Added 2387149
Updated MRT to v3.12
Removed 923561 - ( Superseded by 955759, 979687, 2259922 and 2345886 )
Removed 979402 - ( Superseded by 2378111 )
Removed 980218 - ( Superseded by 2279986 )
Removed 981793 - ( Superseded by 2158563 )
Removed 982214 - ( Superseded by 2345886 )
Removed 982802 - ( Superseded by 2360937 and 2345886 )
Removed 2160329 - ( Superseded by 981957 )
Removed 2183461 - ( Superseded by 2360131 )
14th September 2010 v2.0.3
Added 975558
Added 981322
Added 982802
Added 2121546
Added 2141007
Added 2259922
Added 2347290
Updated MRT to v3.11
Removed 970238 - ( Superseded by 982802 )
11th August 2010 v2.0.2
Added 954459
Added 980436
Added 981852
Added 981997
Added 982214
Added 982665
Added 2079403
Added 2115168
Added 2160329
Added 2183461
Updated MRT to v3.10
Removed 971468 - ( Superseded by 982214 )
Removed 973687 - ( Superseded by 2079403 and 954459 )
Removed 975561 - ( Superseded by 981997 )
Removed 979559 - ( Superseded by 2160329 )
Removed 979683 - ( Superseded by 981852 )
Removed 982381 - ( Superseded by 2183461 )
2nd August 2010 v2.0.1
Added Out-Of-Band security update 2286198.
21st July 2010 v2.0.0
Rebuilt the pack from scratch, therefore v2.0.0 isn't upgradeable and so you'll need to start with a clean source. v2.0.1 and onwards will be upgradeable.
8th June 2010 v1.0.32
Added 975562
Added 978207
Added 978695
Added 979482
Added 979559
Added 980195
Added 980218
Added 982381
Updated MRT to v3.8
Removed 968816 - ( Superseded by 978695 )
Removed 969947 - ( Superseded by 979559 )
Removed 978262 - ( Superseded by 980195 )
Removed 980182 - ( Superseded by 982381 )
26th May 2010 v1.0.31
Added 978542
Added 981793
Updated MRT to v3.7
Removed 951066 - ( Superseded by 978542 )
Removed 973354 - ( Superseded by 978542 )
Removed 979306 - ( Superseded by 981793 )
13th April 2010 v1.0.30
Added 977816
Added 978338
Added 978601
Added 979309
Added 979402
Added 979683
Added 980232
Added 981349
Updated MRT to v3.6
Removed 977165 - ( Superseded by 979683 )
Removed 978251 - ( Superseded by 980232 )
30th March 2010 v1.0.29
Added Out-Of-Band security update 980182
Removed 978207 - ( Superseded by 980182 )
9th March 2010 v1.0.28
Added 975561
Added 979306
Updated MRT to v3.5
Removed 976098 - ( Superseded by 979306 )
9th February 2010 v1.0.27
Added 971468
Added 975560
Added 975713
Added 977165
Added 977914
Added 978037
Added 978251
Added 978262
Added 978706
Updated MRT to v3.4
Removed 957097 - ( Superseded by 978251 )
Removed 958687 - ( Superseded by 971468 )
Removed 971486 - ( Superseded by 977165 )
Removed 971557 - ( Superseded by 977914 )
Removed 971633 - ( Superseded by 975560 )
Removed 973525 - ( Superseded by 978262 )
25th January 2010 v1.0.26
Added Out-Of-Band security update 978207
Removed 976325 - ( Superseded by 978207 )
12th January 2010 v1.0.25
Added 972270
Updated MRT to v3.3
Removed 961371 - ( Superseded by 972270 )
9th December 2009 v1.0.24
Added 955759
Added 970430
Added 971737
Added 973687
Added 973904
Added 974318
Added 974392
Added 976098
Added 976325
Updated MRT to v3.2
Removed 970653 - ( Superseded by 976098 )
Removed 974455 - ( Superseded by 976325 )
10th November 2009 v1.0.23
Added 969947
Updated MRT to v3.1
Removed 968537 - ( Superseded by 969947 )
13th October 2009 v1.0.22
Added 954155
Added 958869
Added 969059
Added 971486
Added 973525
Added 974112
Added 974455
Added 974571
Added 975025
Added 975467
Updated MRT to v3.0
Removed 938464 - ( Superseded by 958869 )
Removed 954600 - ( Superseded by 974112 )
Removed 972260 - ( Superseded by 974455 )
Removed 973346 - ( Superseded by 973525 )
8th September 2009 v1.0.21
Added 956844
Added 968816
Added 970653
Added 971961
Updated MRT to v2.14
Removed 955839 - ( Superseded by 970653 )
Removed 960225 - ( Superseded by 968389 )
11th August 2009 v1.0.20
Added 956744
Added 960859
Added 968389
Added 971557
Added 971657
Added 973354
Added 973507
Added 973540
Added 973815
Added 973869
Updated MRT to v2.13
Updated 961371 to v2
28th July 2009 v1.0.19
Added 972260
Removed 969897 - ( Superseded by 972260 )
14th July 2009 v1.0.18
Added 961371
Added 971633
Added 973346
Updated MRT to v2.12
Removed 961373 - ( Superseded by 971633 )
Removed 969898 - ( Superseded by 973346 )
10th June 2009 v1.0.17
Added 961501
Added 968537
Added 969897
Added 969898
Added 970238
Updated MRT to v2.11
Removed 958690 - ( Superseded by 968537 )
Removed 960715 - ( Superseded by 969898 )
Removed 963027 - ( Superseded by 969897 )
12th May 2009 v1.0.16
Updated MRT to v2.10
15th April 2009 v1.0.15
Added 923561
Added 952004
Added 956572
Added 959426
Added 960803
Added 961373
Added 963027
Updated MRT to v2.9
Removed 951698 - ( Superseded by 961373 )
Removed 956841 - ( Superseded by 956572 )
Removed 958215 - ( Superseded by 963027 )
Removed 960714 - ( Superseded by 963027 )
10th March 2009 v1.0.14
Added 960225
Added 958690
Updated MRT to v2.8
Removed 954211 - ( Superseded by 958690 )
24th February 2009 v1.0.13
Added 967715
Removed 950760 - ( Superseded by 960715 )
10th February 2009 v1.0.12
Added 950760
Added 960715
Updated MRT to v2.7
Removed 956391 - ( Superseded by 960715 )
13th January 2009 v1.0.11
Added 951748
Added 958687
Updated MRT to v2.6
Removed 957095 - ( Superseded by 958687 )
18th December 2008 v1.0.10
Added 960714
10th December 2008 v1.0.9
Fix: Missed a few lines in entries.ini which meant mrt wasn't getting copied over.