Eh, I never noticed an upgrade, although admittedly I wasn't concerned with that when playing the post patch version.
As for people like me having problems getting the FOV fix with Flawless Widescreen to work, I just confirmed that all you need is the .exe file that the game ran from before the patch. Just place it where the post patch .exe is and replace the file with the old one. Obviously backup the patched .exe, but you can just rebuild your cache with Steam if you want to restore that. I might recommend offline mode too, so the game doesn't automatically patch again.
Edit: Wut, interesting timing, ha. Yes, I can confirm that works.