...Stfu? :| You serious?
Bethesda and ZeniMax are working on Elder Scrolls MMO, Tom's Guide claimed. The site said "an industry source that wishes to remain anonymous" was their source and they were quite sure about the Elder Scrolls MMO as they told that "ZeniMax Online Studios and Bethesda will officially announce Elder Scrolls Online in May 2012."
Pretty much every gaming news site is reporting it, and since it has already been fully confirmed that Bethesda are making an MMORPG of some sort, and that these type of sources are often right, more than likely it's true.
If not, then it'll be a Fallout MMO, either way it's cool, but with this new information it seems it'll be TES.