The console versions of The Elder Scrolls Online are set for release on June 9, the week before E3, so expect it to figure in the show somewhere. There might even be mention of some sort of DLC too, although I don’t think many are excited by the prospect.
As for an announcement of The Elder Scrolls VI, I think it’s probably wishful thinking. If Bethesda goes all out with Fallout 4, it might be shooting its bolt with The Elder Scrolls VI as well. But then if it wants to *really* turn heads, a simple teaser or acknowledgement that it’s in development would be enough.
And considering the massive success of Skyrim there might even be scope for a spin-off from that. Remakes have been hot this year, so could we expect a Skyrim HD collection on PS4 and Xbox One? Or just an excuse to use the same locations, tarted up visually, as something to tide us over until the real TES VI announcement.