I flew IVT on Sunday LHR-PHX in WT and can confirm that it has been refreshed with new foam and seat covers, new curtains and carpets and new Panasonic IFE.
Interestingly there were lots of problems with the IFE and even after several full cabin resets there were a large number of films that simply wouldn't play. Hopefully these were just teething problems as I've never had that problem on other planes with the system.
Hope this helps