Three further HD revisions of back catalogue titles have been confirmed by Sega.
Joystiq reports that an Xbox Live Arcade and PlayStation Network port of 3D Dreamcast platformer Sonic Adventure 2 was revealed at the San Diego Comic Con this weekend.
A tentative release date of autumn was also mentioned.
Elsewhere, Andriasang caught glimpse of a listing for Yakuza 1&2 HD Edition on Sega's Japanese release schedule, which incidentally has since been removed.
It was carrying a release date of December 1st 2012.