Nelson, the site admin for Michael Bay's Shoot For The Edit site reports "Just a little heads up: Empire and USAToday might have the first official TF2 photos on 12/29/08. So keep your eyes open."
Earlier this month, Michael Bay had indicated that he was "going to release some set stills on this site in a few weeks" so Nelson's info may be accurate. Sure the info isn't coming first on Bay's site but I imagine Paramount's PR and Marketing departments would have had a heart attack if full advantage wasn't taken of the first official reveals of moments from the anticipating sequel. Paramount used Empire and USA Today I am not saying this is a build-up to a trailer, its just that the Star Trek campaign showed them that those two sources are a good way to hit a wide audience in the US and Europe and spread the information on the web.
Note that while Nelson has been a good source of information, he is not "official" so his information could be off or he out of the loop on any changes to the marketing plan. As always time will tell but on the bright side at least this time the wait is short. Pictures will pop up on Monday or they will not. Thanks to Gregory for the heads-up.