Toy Fair 2008 is approaching and there have been pictures of the late 2008 sets circulating on the web. I found Joe Meno with some of the first pictures of themes including Star Wars, Indiana Jones, Speed Racer, Bionicle, and Batman.
Update (AB): Ace Kim also has extensive pictures from Toy Fair 2008, nicely organized into photosets with lots of great details — prices, release dates, etc.: