According to Coming Soon, several titles will be released by Warner Home Video on HD DVD including V For Vendetta:
On October 31, Warner Home Video will release seven new high definition titles. Making their debuts are V For Vendetta and Excalibur on HD DVD and The Phantom of the Opera, The Searchers and Unforgiven on Blu-ray Disc. Under Siege will be making a simultaneous debut on HD DVD and Blu-ray Disc.
V For Vendetta makes its HD DVD debut with In-Movie Experience (IME), the interactive feature allowing viewers to enjoy new ways of accessing interviews and other material -- while the movie is running. The IME for V For Vendetta features the "Director's Notebook: Reimagining a Cult Classic for the 21st Century."