It is included if you got either the convenience or the premium package. It expires with the warranty. When you activate it they will try to sell you some other stuff.
When I hadn't activated it after having the car for a couple of months, BMW sent me a letter encouraging me to do so. Oddly, the letter referred to my new 2011 "M1" Coupe. I couldn't help but give them a bit of good-natured guff about their little faux pas when I called in to activate the assist feature.