I do know for certain, xenon still isn't available without premium on the 2014 s/xdrive28i, my CA built a xdrive28i 2014 for me just to check that fact.
Not sure on the transmission, the xDrive35i 2013 and 2014 both have a build code of 205 for the transmission, which at first I thought meant it's staying 6 speed but the 2013 and 2014 xDrive28i's also show 205 for the transmission code.
I'm personally hoping they don't change to the 8 speed on the 35, the 8 speed isn't as bullet proof and I like the driving feel of the 6 speed far more than the 8 speed but it's just personal preference. The 8 also speed isn't as extra fuel effecient as you'd think, and the 8 speed hurts 0-60 times.
Hopefully any day now we'll see the dealer packets for the X1. BMWNA told me mid January 3 weeks ago...