We didn't get the offer in the UK either, but maybe that's because I got the free demo one (when the offer was on - it's finished now AFAICS) to start with and so don't qualify as a paying customer.
According to Ben at Hydreon: 'any unit shipped after 13 OCT 2011 contains the updated (SW 011) revision' (and the RainX pre-coating, but with the recommendation that the user recoats at least yearly).