It's been a week of game defections, first you had Activision picking up the James Bond License from EA then Sierra picked up
Timeshift and now Sony Online Entertainment has agreed to co-publish
Vanguard: Saga of Heroes along with the games developer Sigil Games Online. From the
press release it looks like Sigil and Microsoft had different visions of the game and that let to them purchasing the rights back from Microsoft and then signing with SOE.