Not sure about current incentives, but I bought my 09 back in may and paid 52 for the hse, lux pack, supercharged grill and side vents. But I got mine through fleetrates.com not a dealer. They delivered it to my door with 52 miles on it.
You should be able to get it cheaper unless the deal i got was that good. I also used fleet rates to shop a new QX56 for the wife. The dealer came in lower. Check them out if interested.