Reserving an '11 x5?

[CarsRmyVICE]

My current lease on my 07 4.8 ends may 1st and I want to get into a tt v8 x5 at that time. Should I be putting a deposit down ahead of time or do you think I should wait until msrp information and such is out? When will this information be out? Can I put down a deposit on one of these without committing to a price or am I at the dealers mercy for wanting one of the early LCI's? How do you negotiate price over invoice before this information is available? I feel like they wont be flying off the lot in my area so I am not overly concerned but I do not want to be without a vehicle either. Also I forgot to mention I intend to order it to my specs as always. Thanks in advance for any insight!