compilation disc of 40 varied titles from the glory days of Sega. The $30 bundle for Xbox 360 and PS3 releases in "spring 2009" and outputs in 720p.
As long as developer Backbone Entertainment keeps the quality high, this is looking like a must-have compilation for fans. [Until Sonic's Ultimate Genesis Collection PLUS. - Ed.]
Update: Added full list of revealed games after the break. Apparently more will be announced at a later date.
Source - Sega's press release
Source - Sega's game details page