Mega Drive Games To 360 Before Revo?

Gamespot are reporting a rumour they found via Meristation that Sega has struck a deal much like its one with Nintendo to make most Genesis (Mega Drive) games playable on the Xbox 360 via a “virtual console.” The site says said functionality will be available as of October, along with another wave of all new Xbox Live Arcade games.

Is the rumour real? If MS gets their virtual console to take off before the Revolution hits, will it hurt Nintendo’s chances?