We've already seen a few games drop support for the old reliable Windows XP, including EA and DICE's Battlefield 3 and now it looks like they're going to start taking that a step further, with a comment from DICE Rendering Architect Johan Andersson indicating that as soon as next year, we're going to start seeing games that require a 64-bit operating system.
In a very to-the-point tweet
), Andersson explained "We'll have Frostbite-powered games in 2013 that will _require_ a 64-bit OS. If you are on 32-bit, great opportunity to upgrade to Windows 8".
As VG247 notes, The Frosbite 2.0 engine has been announced as the technology behind the upcoming Medal of Honor: Warfighter and Command & Conquer: Generals 2, and there's also rumours that we might see it in the rumoured next additions to EA's Army of 2 and Dragon Age franchises as well as obviously any upcoming projects in development at DICE themselves -- rumoured to include sequels to both Battlefield: Bad Company and Mirror's Edge.
Medal of Honor is due in October 2012, so will surely still be 32bit-friendly, but this could mean that a 64-bit OS might be a requirement for Generals 2 on PC.