Ordered my A5SB early October 2010 - dealer said a 4-5 month waiting list (usual sales patter!?). Although not exactly sure when the order actually goes off. It was due in this week, prepped ready for a 1st March collection. Dealer said they had been experiencing delays with transportation from Germany otherwise would have been in a couple of weeks ago.
Hope yours ain't too much longer!
ps, did you get a good deal? With me they discounted the original (pre-vat increase) price by about £2.5k to match the best internet broker quote I found, but then factored back in the vat at 20%. Don't know if that was a god deal or just average?