Recently, Bethesda, a subsidary of ZeniMax Media and the famed creator of the Elder Scrolls series, recieved a massive $300 million to go towards an as yet unannounced MMO title, among other things. Speculation as to what the title may be has been thrown in favour of one camp of Bethesda fans.
It appears that the domain EDLERSCROLLSONLINE.COM has been registered by the developers parent, ZeniMax Media, which adds to the growing speculation that the first MMO title out of the RPG veteran will indeed be the transition of the Elder Scrolls series from single player gameplay to the MMO format.
For those of you that don't know, Oblivion, the latest game in the Elder Scrolls franchise, was credit with being the closest a single player game could get to feeling like an MMO, which suggest that the company may have been thinking about the idea for quite a while.
Bethesda have not confirmed or denied this rumor and it seems unlikely that they will do so at any point in the near future.