Thomsonfly Fleet Upgrade?

Hi,

As you can see from my signature we have booked our holiday in the summer to Zakynthos (Again!) this time flying with Thomsonfly/Britannia (Whatever they are called!), my 15th and 16th flights with Britannia. Delighted because its Kalamaki again, meaning 2 weeks of spotting from the beach :D.

Anyway just wondering, when do the Thomsonfly a/c get upgraded and refurbished with leather and stuff like that? Would sure love to fly on a newly refurbished bird 🙂

Thanks.