According to toonzone.com "Superman/Batman Apocalypse" will be the next Direct to DVD feature after Under the Red hood!!!!
YES!!!! \o/
Newly released artwork for Batman: Under the Red Hood reveals that Superman/Batman: Apocalypse will be the next installment of the Warner Premiere/DC line of direct-to-DVD releases, The World's Finest reports.
The back cover viewable here:
http://www.toonzone.net/news/image.php?imageID=6738&___r=%2Fnews%2Farticles%2F33640%2Fsupermanbatman-apocalypse-revealed-as-next-dc-animated-feature says that a "first look" at the "next original animated movie" will be a special feature included on Under the Red Hood.