[quote name='bitter1961']
http://forums.steampowered.com/forums/showthread.php?t=838858
That list's quite a bit out of date, but apparently some sort of mix up resulted in the newer thread being deleted. There's been some changes, some new games to add to the list, and some games on the list have gotten their updates. I do believe that at least ArmA and EU3 have received the latest patches. But lots still remain unpatched.
For a single game I'm sure of, with absolute current-as-of-5-minutes-ago confirmation, I loaded up World of Goo as a test and it is indeed still at an old version (widescreen resolutions don't work correctly, which was fixed in 1.30). Luckily it's a game you can install the retail patch over top of, though of course you lose the Steamworks integration (achievements, etc.), and you can't launch it via Steam anymore, else the automatic patching automatically downgrades.
I'm not claiming Steam aren't doing a great job, they really are the gold standard of digital downloads. But patches from 3rd party developers are such a tricky thing that even Steam have problems.
I also think it should be pointed out that D2D do do a decent job on the games that they don't wrap up in so much DRM that patches become a problem. And with boxed copies starting to include just the same style of activation DRM as D2D, it's actually helping D2D since patches are becoming cross-compatible, since they're often virtually the same executable now.[/QUOTE]
ShingleTingle got Owned. Thanks for looking that out, very informative!