Normally the demo for NCAA Footballpairs participants from the national championship game, and the latest one, releasing next week, still does. It just features the combatants from the 2003 BCS championship game. Check the screenshot gallery for why.
The reason for this seems to be in the threads the teams are wearing. Six screens for the demo published today show Ohio State and Miami in their new Nike Pro Combat getups. At first I thought the Buckeyes were threaded out in the the heritage uniform and helmet it's used in nonconference games early in the season, but the pants are different. Notice also both sides are sporting new Nike kicks, part of some branded apparel and gear upgrades (such as the leg brace on the Buckeye in No. 2) new to this game.
The demo lands a week from today on the Xbox 360, and June 15 on the PS3.