If some of you would actually read a few threads back you'd very quickly realize ALL OF THIS has already been discussed and decided.
You can argue your case for the definition of 'sequel' all you want, but all of it is pointless when you must consider the fact the that author of the tweet may have made a complete wreck of its proper use.
As for the guys talking in the video blog thing (or whatever it is), I honestly believe they're just spouting off on the irony that since they're part of the press people assume that they must therefore know about TES:V - which is exactly what you've all been burning up posts over.
Did we discount Guild Wars 2 for some reason? They are even selling a 128 page hard cover book of their art, and just watching the trailer and screenshots almost made me crap myself... I think the only thing with that one is that it might have been at E3, but I couldn't find anything...
EDIT: Well I guess it wasn't at E3 http://www.destructoid.com/guild-wars-2-skipping-e3-playable-at-gamescom-and-pax-175330.phtml