Lil Wayne has announced a release date for his new album, Rebirth, and there's plenty of digital promotion planned around it.The lead single is debuting on his MySpace profile today, but he's also signed a deal with AT&T, which will showcase the single on Facebook, as well as streaming an upcoming gig by the rapper on the social network.AT&T will also offer an exclusive ringtone of the single, Prom Queen, to its subscribers, along with a full-track download. The Facebook webcast is taking place tomorrow (Wednesday) at 9.40pm PST. It's a sign of how artist partnerships with telcos like AT&T are stretching beyond the traditional gig sponsorships and ringtone promotions.(via Billboard)