Was reading through the pdf and found this little nugget:
"BMW’s acclaimed xDrive all-wheel drive is featured in the newly named 328i and 335i xDrive Sedans and 328i xDrive Sports Wagon."
Looks like the xi model will have a new and longer name (along with the other name changes BMW has planned -
http://www.bimmerfile.com/2008/07/15/bmw-x3-xdrive30/). I hate these new names, they just take away from the simplicity of BMW names that I've always liked.