Classic Sega Genesis games are about to get re-released in a series of 3-pack bundles entitled Sega Vintage Collections,  and Sega Japan has announced the release dates for the first four bundles. The first two packs, the Sega Classic Collection and the Monster World Collection will release May 23, 2012. More information on the these packs can be found here. Two more packs will drop the following week, May 30. The Golden Axe Collection and Bare Knuckle Collection will be collections of the Golden Axes and Streets of Rage games, respectively. Each collection will cost 800MSP, so get ready to stock up on nostalgia. Thanks to @lifelower for the tip.