This past month a handful of PlayStation 3 games got unannounced, automatic updates. Guitar Hero III: Legends of Rock addressed lag issues in its 1.01 update. Later, Andrew over at PS3 Fanboy discovered Heavenly Sword got an 18 MB update that added rumble support.
Yesterday, I popped Time Crisis 4 in to find myself whisked to an update screen prompting me to update the game to version 1.01. The Time Crisis 4 update was 18 MB in size, just like the Heavenly Sword patch. Is something massive going on behind the scenes? Probably not, but I it would be nice if each update disclosed details about what the patch modifies.