Passengers can still book under First Choice, so why not leave it until Spring 2010. First Choice website still going, and aircraft too, at the current time, the only changes are the flights are under a TOM codename and Thomson is making all the dosh.
I hope they actually do something with the livery, the ones on ZR and ZS currently arent very impressive, just the Thomson logo in a smaller size, they either keep it as Thomsonfly or have Airways after Thomson...