Hot rumor of the day: The MMO that Bioware is working on is based on the Knights of the Old Republic universe.
Validity: We really can't speak either way for the rumor's source--we hadn't heard of Primotechnology.com before this morning, and the story is attributed to an unnamed source--but we do know definitively that Bioware is working on an MMO, and Knights of the Old Republic is their property...and if that were all there was to the story, we might be like "probably true!"
But it's not all. There's also the debacle that is Star Wars: Galaxies. TheFeed wonders whether any sane person would sink tens of millions into another Star Wars MMO... yeah, yeah, we known KOTOR isn't Star Wars Galaxies, but we find it hard to believe that financial backers, who most likely don't care about gaming except as a way to make a profit, would be willing to back a second shot at a Star Wars MMO after the failure of Galaxies.
So for now: Undetermined, if spicy, rumor.
Primotechnology: BioWare’s Upcoming MMO Based in KOTOR Universe