1addicts has been maintaining a list of known open allocations... very handy particularly if you're going to do an ED and/or PCD since you don't have to travel to the dealer to get the car. However, I think at this point the allocations are all but gone. Check over there though and see if there are any on the list, but you may also have to start just calling/emailing BMW dealers... though you can probably also expect to pay well over MSRP at this point.
2001 E46 BMW 330i Sport Package 6MT
2004 BMW R1150GS
2004 E60 BMW 545i Sport 6MT
2012 BMW 135i - Deep Sea Blue / Terracotta / DCT
2012 BMW K1600GT - Vermillion Red Metallic