As pessimistic as this sounds, I agree with Gabbo.
Gee, thanks. I will start with the slightly off topic stuff, and work my way toward being on topic. Bear with me.
My intention was not to be pessimistic; if companies want to make more money they will appeal to a wider audience. Mass Effect and Fallout have both turned more shootery (which I am hereby declaring a word) as time goes on, which is an attempt to appeal to a wider audience. It worked. Both RPG fans and Fallout fans play the games, and both games are making massive amounts of money. I am guessing TES will go in a similar direction. If the game doesn't outright have guns (blunderbusses and flintlock), I'm sure more shootery aspects will be in the game (as if Oblivion didn't go far enough).
TES:V ill try to appeal to a wide range of audiences. They will implement all the RPG elements the fans enjoy, while also adding content for people who would not generally play an RPG. They will try to implement as many features as they can before showing the game off, and because I'm assuming Beth wants to show a lot that means they will delay an announcement until they are ready. Beth is trying to make the game as broad as it can be, hopefully without destroying the game we know and love in the process.
All of this will take an enormous amount of time, but by now they should just be polishing the game as much as they can, and eliminating the bugs that have plagued the games in the past. New Vegas, while not made by the same people, is still associated with TES. If TES is flawed in the same areas (bugs), you can expect reviews to call Beth out on it. Because they want to have the shortest amount of time between announcement and release, they are taking more time than we would like.
The game is taking a while to be announced, but this is nothing to be afraid of. Once the game has been announced, you can expect hype up the hoo hah. Everyone will know about the game and everyone will be talking about it. The talk and anticipation before the announcement has already been calculated, and this talk will grow exponentially once the game has been announced. I think Beth knows what it's doing, and I fully expect the game to be announced soon. If not, that just means more polish and fewer bugs.