You mean where it unlocks if a paired Bluetooth device is connected or when someone is carrying your phone? Seems awfully insecure, considering the fact that anyone could be carrying your phone and it could stay unlocked. However if Apple were to make a similar feature to it and limited it to either a certain location or if it used face recognition I would probably be on board with it.
plenty of rumors. We're really to far away from the launch date to give any of them credibility.
It's doubtful that manufacturing even started yet. So speculate all you want
But when June comes around we'll have a much better idea of things