No real new rental rules.
You just can't be what they concider a comercial renter.
They big rules being discused on the boards are the crack down on the 1 transfer per useyear rule. Thats not new either just being enforced more now.
Also Members are the only ones allowed to call MS (again not a new rule just now enforced ) so you would have to make any and all change request for your renters.