MAN - LAS using A330?

Hello everyone,
I've been watching the upgrades for the 747 fleet closely but I have heard a rumour that they are going to use A330 on the Manchester to Vegas route, to compound this I've tried to choose my seat in PE which im flying in on the 2nd December and it is the seat map for the a330, does anyone know if this is correct?
Thanks
I've been watching the upgrades for the 747 fleet closely but I have heard a rumour that they are going to use A330 on the Manchester to Vegas route, to compound this I've tried to choose my seat in PE which im flying in on the 2nd December and it is the seat map for the a330, does anyone know if this is correct?
Thanks