True this got added and it's a great feature, it reminds me of spaces on OS X!
The only sad thing about this gesture is that it's pretty slow on my SP3. I guess I could buy the new iPad to speed things up, but then in another year it might be just as slow. It's a shame really. My 5 year old iMac works just as good as the day it started, but it seems that iPads get slower and slower.