All the radio guys out here talk about it whenever they talk about the move.
There also were articles in San Diego papers talking about how if there was a move to Vegas for any team they would likely rebrand and create a "new" identity in Vegas.
Its one of those "They are talking, but not so openly that its everywhere" sort of things right now. Shouldnt surprise anyone if they do it, but if they dont it wouldnt be a surprise either.