Just got my iPhone 5 64 last night.. Well, it's been sitting here in a FedEx box for a few days while I was out of town.
After finessing some settings, email and SMS seems to be working OK. Apps is working fine with the lightning cable, even though I never use apps. BMW Live and Internet working properly over BT tethering. My next point of interest is finding an adaptor to go from the snap-in to the lightning port to see if the videos work on the iDrive.
All in all, seems like the same phone as my 4S. Lighter, faster, LTE is fast as hell (was pulling 27mbps down and 18 up), and the extra real estate is great.