I'm pretty sure the BBC will commission a 4th series for October 2006.
The only real question to which i would not be so certain is whether Brucie will return or not. I hope he does but i think he's been saying to himself 'right, last one' ever since the first series but is simply so in love with doing the programme that he can't let go. I hope he is willing and able to do the 4th series - regardless of what some people say, the show just wouldn't be the same without him.
That aside, i do worry the BBC are coming all too close to doing this dancing business to death. I've said it before but i really think we would be better off without a second series of Strictly Dance Fever in the spring. Genre fatigue is all too real a threat. There was absolutely no need for the dreadful (both in idea and production) Strictly African Dancing, and Strictly Ice Dancing was at best a nice if wholly unnecessary addition to the franchise. Last year's Xmas Special was alright if not also a bit more than was required. This year's Xmas Special, i think, is a step too far. By then we will have had an excellent and exhausting 10 week series with the grand final just before Xmas being a nice time to round it off. Its a case of diminishing returns with these spin-off shows.
By the way, what do we make of ITV's Dancing On Ice that is due to start in 2006? Needless to say, a pathetic copy cat attempt to get in on the act. Tacky, i'm sure. Again tho, its MORE dancing for the viweing public to begin to get fed up of.