Up for preorder on Amazon is Atari Flashbacks Vol 1 and Vol 2. Kind of a scummy move that there's 50 games per disc so they can charge $20 each, but they do include online leaderboards and online multiplayer according to the box. Most games are for the Atari 2600, it includes some arcade versions(most of them that have 2600/Arcade versions it includes both.)

http://www.amazon.com/exec/obidos/ASIN/B01G3WBR78/