[LG Optimus Black] redy2006:
There's a lot of binary difference... (comparing #12 and #13)

Folder Compare
Produced: 11/10/2011 2:05:55 AM

Mode: Differences
Left base folder: D:\redy\droid\cm_p970_full-12
Right base folder: D:\redy\droid\cm_p970_full-13
Name Size Name Size
--------------------------------------------------------------------------------------------------
system 159,875,104 system 159,842,740
+app 46,748,066 +app 46,723,409
|+AccountAndSyncSettings.apk 108,667 <> |+AccountAndSyncSettings.apk 108,659
|+ADWLauncher.apk 731,325 <> |+ADWLauncher.apk 731,209
|+Androidian.apk 3,948,700 <> |+Androidian.apk 3,947,488
|+Browser.apk 499,260 <> |+Browser.apk 499,244
|+Calendar.apk 328,090 <> |+Calendar.apk 328,086
|+Camera.apk 360,122 <> |+Camera.apk 360,058
|+CMParts.apk 452,032 <> |+CMParts.apk 452,028
|+CMStats.apk 30,104 <> |+CMStats.apk 30,100
|+CMUpdateNotify.apk 36,631 <> |+CMUpdateNotify.apk 36,631
|+Contacts.apk 813,286 <> |+Contacts.apk 813,266
|+ContactsProvider.apk 155,139 <> |+ContactsProvider.apk 155,122
|+Cyanbread.apk 3,603,784 <> |+Cyanbread.apk 3,603,198
|+DeskClock.apk 273,572 <> |+DeskClock.apk 273,600
|+Development.apk 108,058 <> |+Development.apk 108,178
|+Email.apk 862,585 <> |+Email.apk 862,601
|+FileManager.apk 115,280 <> |+FileManager.apk 115,276
|+FM.apk 521,795 <> |+FM.apk 521,799
|+Gallery3D.apk 552,457 <> |+Gallery3D.apk 552,029
|+LatinIME.apk 11,961,485 <> |+LatinIME.apk 11,961,073
|+LiveWallpapers.apk 4,223,992 <> |+LiveWallpapers.apk 4,223,332
|+MagicSmokeWallpapers.apk 213,956 <> |+MagicSmokeWallpapers.apk 211,164
|+MediaProvider.apk 50,492 <> |+MediaProvider.apk 50,493
|+Mms.apk 791,483 <> |+Mms.apk 791,411
|+Music.apk 486,962 <> |+Music.apk 486,892
|+Pacman.apk 23,919 <> |+Pacman.apk 23,919
|+Phone.apk 1,350,189 <> |+Phone.apk 1,350,165
|+Protips.apk 97,471 <> |+Protips.apk 97,471
|+QuickSearchBox.apk 508,584 <> |+QuickSearchBox.apk 508,552
|+Settings.apk 2,161,221 <> |+Settings.apk 2,147,821
|+SoundRecorder.apk 83,487 <> |+SoundRecorder.apk 83,479
|+SpareParts.apk 21,618 <> |+SpareParts.apk 21,736
|+SystemUI.apk 371,242 <> |+SystemUI.apk 371,330
|+ThemeManager.apk 327,171 <> |+ThemeManager.apk 322,080
|+TtsService.apk 25,648 <> |+TtsService.apk 25,640
|+VisualizationWallpapers.apk 150,262 <> |+VisualizationWallpapers.apk 150,266
|\VoiceDialer.apk 77,047 <> |\VoiceDialer.apk 77,063
+bin 6,616,504 +bin 6,616,504
|+debuggerd 22,224 <> |+debuggerd 22,224
|\mkyaffs2image 14,768 <> |\mkyaffs2image 14,768
+etc 1,168,044 +etc 1,155,266
|+security 142,769 |+security 142,769
||\otacerts.zip 1,125 <> ||\otacerts.zip 1,125
|+CM-NOTICE.html.gz 5,689 <> |+CM-NOTICE.html.gz 5,671
|\NOTICE.html.gz 74,898 <> |\NOTICE.html.gz 62,138
+framework 10,081,150 +framework 10,080,593
|+am.jar 12,007 <> |+am.jar 12,007
|+android.policy.jar 107,636 <> |+android.policy.jar 107,636
|+android.test.runner.jar 76,348 <> |+android.test.runner.jar 76,348
|+bmgr.jar 6,235 <> |+bmgr.jar 6,235
|+bouncycastle.jar 290,685 <> |+bouncycastle.jar 290,685
|+com.android.location.provider.jar 3,216 <> |+com.android.location.provider.jar 3,216
|+core.jar 1,862,816 <> |+core.jar 1,862,816
|+core-junit.jar 10,044 <> |+core-junit.jar 10,044
|+ext.jar 515,398 <> |+ext.jar 515,398
|+framework.jar 3,094,733 <> |+framework.jar 3,094,752
|+framework-res.apk 3,297,341 <> |+framework-res.apk 3,296,765
|+ime.jar 3,332 <> |+ime.jar 3,332
|+input.jar 2,441 <> |+input.jar 2,441
|+javax.obex.jar 27,000 <> |+javax.obex.jar 27,000
|+monkey.jar 37,442 <> |+monkey.jar 37,442
|+pm.jar 12,281 <> |+pm.jar 12,281
|+services.jar 663,871 <> |+services.jar 663,871
|+sqlite-jdbc.jar 54,526 <> |+sqlite-jdbc.jar 54,526
|\svc.jar 3,798 <> |\svc.jar 3,798
+lib 56,668,917 +lib 56,675,109
|+hw 255,928 |+hw 255,928
||\alsa.p970.so 31,088 <> ||\alsa.p970.so 31,088
|+libaudiomodemgeneric.so 9,616 <> |+libaudiomodemgeneric.so 9,616
|\libwebcore.so 5,177,576 <> |\libwebcore.so 5,183,768
+usr 8,666,373 +usr 8,665,833
|\srec 1,926,323 |\srec 1,925,783
| \config 1,926,323 | \config 1,925,783
| \en.us 1,926,323 | \en.us 1,925,783
| \grammars 57,598 | \grammars 57,058
| \VoiceDialer.g2g 55,581 <> | \VoiceDialer.g2g 55,041
+xbin 7,888,503 +xbin 7,888,503
|+crasher 5,536 <> |+crasher 5,536
|+nano 64,132 <> |+nano 64,132
|+openvpn 347,092 <> |+openvpn 347,092
|+oprofiled 57,364 <> |+oprofiled 57,364
|\vim 914,660 <> |\vim 914,660
\build.prop 2,721 <> \build.prop 2,697
--------------------------------------------------------------------------------------------------

But I don't know the changelog of the source, just comparing the binary... :)