ENGLAND!!!!
In all seriousness, I have enjoyed each Assassin's Creed game and if they put enough resources from this one, it should be another good one and almost certainly next-gen
As for the question over dev-time, you have to ask yourselves why would they? Rockstar released GTA IV about 5 years ago and yes it did sell nearly 20m copies + DLC money. 5 years gives you plenty of time to create an amazing open world game with interesting environments and characters.
Ubi sell 10m+ each year with probably 2 year dev times with alternating teams. They probably have more people working on the game and it is clearly lacking in relative depth in terms of interesting worlds and characters (since AC II), but it is fairly close and clearly makes them a lot of money.
If I were them, with the success of FC 3, they could probably alternate them now, but before this, they simply haven't had any other major franchises. In the future, I could probably see an AC game and FC game swap years, but they certainly don't want to miss the start of the next generation AND AC III just sold 12m copies, all is good in Ubi's world







