A "retrofit" PTI/Bluetooth kit hasn't been officially confirmed in North America. (The current "kit" version that's available in other markets does not really integrate as well as you'd expect. Let's hope it's updated.)
The factory option version (which, in theory, started being available in March builds) hasn't seen an actual delivery in North America that I know of.
The factory LR/Nokia system isn't that great, honestly. It's the same system as the '05+ Range Rover has, but uses the radio head unit's LCD and doesn't offer SMS. If you don't happen to have a phone that has a compatible physical cradle/dock available (extra $) from LR, it's really not that special.