Trek released their Fuel EX 8 last week, their first batch is already sold out. Ex 7 and 9 are scheduled for about 2 weeks from now. Their site will be updated this week launching their Fuel EX series, similar to how they did the Madone.
As for hardtails and what not, not sure when they'll be on their site, but if you go to a dealer, dealers have access to most of the 08 hardtail pics.
I asked my Trek rep they same questions this morning