Dunno. It really depends on the speed with which your local Carphone Warehouse clears their stock. If they don't move the phones very fast, I'd imagine they'll still be on 2.2 or even 2.1. If, on the other hand, they sell the phones quickly then they'll get the newest models, which may be loaded with 2.2.1
It's not really a big deal though, as you can just use a SIM proxy until a software unlock is released.