Here are some nice unconfirmed titles I'm looking forward to. Release dates are subject to change.
From Universal Pictures 2008:
July 11. Hellboy II: The Golden Army
August 1. The Mummy: Tomb of the Dragon Emperor
From Paramount Pictures 2008:
January 18. Cloverfield
May 2. Iron Man
May 22. Indiana Jones and the Kingdom of the Crystal Skull
June 6. Kung Fu Panda
December 25. Star Trek
But looking at the Blu-ray release list, it seems there are a lot more that I want!