A dump of 3D Gunstar Heroes may point to planned games from the Sega project.
Hackers may have found a group of planned additions to Sega's 3D Classics line.
A poster on the GBATemp forums allegedly dumped the RAM of a 3DS running 3D Gunstar Heroes and found listings for approximately 30 games, a majority of which are not currently released.
The full listing is pictured, but the highlights range from games in existing franchises already represented (Streets of Rage 3, Sonic Spinball) to games previously in 3D on the Sega Master System (Zaxxon) to odd choices for a "3D Classics" remake (Shining Force). No further games in the series have been officially announced from Sega/M2 beyond Sonic the Hedgehog 2 which releases this month outside of Japan, though a new physical compilation has been announced for Japan.