Warner Bros. has confirmed the rumors that The Picture of Dorian Gray will arrive on DVD on October 7, 2008. Here's the official release:

Update, 06/09/2008: Warner Bros. has officially announced this release.

This is apparently ancient news (from February), but I completely missed it. I'm posting it now in case anybody else shares my lack of timeliness. As part of a press release about Warner Bros.'s 85th Birthday, Warner Home Video announced that a new classic horror box set would be forthcoming in the fourth quarter of this year (between October and December).

UPDATE: There will be no release of The Devils in the near-future.