I saw this @ 3DGPU.com and this is what they said. OK folks, I just got off the phone with NVIDIA. It seems as if someone uploaded the wrong driver set to their site, hence the missing Nvidia Control Panel applets. The correct ones should be available in the next hour or so, I'll let you know... The fixed drivers are uploaded @ Nvidia! Still 28.32 though... Read the previous post for the links, please. Click on Read More... for more information + some info about 28.80???

Matt from 3DCPU said also:
From what I understand when I talked to Nvidia, we should be getting the 28.80 drivers today. I asked Nvidia about the Digital Vibrance issue, where it shuts off when you start a game, and they said that it has been fixed. That's surely good news. Sorry, no 28.80 drivers for you today...