Sounds about right to me.
It'll be interesting to know how long Battlefield 4 has been in development. I'd imagine it started development just as Battlefield 3 was releasing, so they've had over 2 years worth of time to work on it. Hopefully that doesn't mean that they've not strayed far from what they released with Battlefield 3 as I can imagine the development outlines wouldn't differ much if that were the case.
I do hope it'll be bigger and better on PC, but for current generation consoles I can't imagine it being any larger than Battlefield 3. On the next gen, it'll definitely be an improvement.
Will Battlefield 4 mark the return of the Battlefield Commander? Or is that a distant memory now?