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As everyone expected, the undisclosed Activision game for Revolution turned out to be Tony Hawk.
A teaser for the new issue of Nintendo Power magazine contains brief but unambiguous confirmation that the Tony Hawk franchise is coming to the Nintendo Revolution. Along with some character art for Castlevania: Portrait of Ruin on DS, which was officially announced today by Konami, the cover of the new magazine issue says "THE TONY HAWK REVOLUTION" at the top. We don't have access to the article itself at this time, but this statement makes it quite clear that the Hawkster will bring his skateboarding antics to Nintendo's new console.
In a recent financial report, Activision mentioned that the next main game in the Tony Hawk series will be called Tony Hawk's Downhill Jam and will be released on multiple platforms in 2006. It is not clear from the Nintendo Power cover whether the Revolution game is a version of Downhill Jam, nor have any details about Downhill Jam yet been released to the public.
As everyone expected, the undisclosed Activision game for Revolution turned out to be Tony Hawk.