Yes, Warner Home Video is one of the studios that are going to release HD DVD and Blu-ray movies.

The Warner Blu-ray Disc line-up is the same as the HD DVD line-up. See the list of the 15 titles below.
None of the studios announced yet a price of HD DVDs or Blu-ray discs.
If I counted right about 50 Blu-ray Disc (BD) movies have been announced so far.
Warner Home Video Blu-ray Movies:
Batman Begins
Charlie & The Chocolate Factory
Constantine
The Dukes of Hazzard
The Last Samurai
Lethal Weapon
The Matrix
Million Dollar Baby
Oceans 12
Swordfish
Terminator 3: Rise of the Machines
Training Day
Troy
Twister
Unforgiven