The Return of the WB - but online only.
ETA: I linked to the Hollywood Reporter article which makes it seem less likely that Buffy and Angel would be among the programs streaming at the site but the TV Guide piece was confusing on it but on second read said pretty much the same thing:
The WB, which merged with UPN in 2006 to become the bastion of twentysomething programming that is The CW, aired a string of fan-favorite shows in its 10-year existence, including Dawson's Creek, Buffy the Vampire Slayer and Angel. It's not clear yet whether non-Warner Bros. shows will be available on the site, but new Web-minisodes are reportedly in the works, with series aimed at The WB's core audience.