Surely they'd just do what they did in the Netherlands?
Considering Orange and T-mobile merged in the Netherlands (or Orange bought them out, i cant remember) and stuck with the Orange name, i would imagine they'd do the same thing here.
however, I'm hoping their not going to mess too much with the networks. I have great t-mobile coverage where i live, but on the other side of town the orange coverage is far superior. Here's hoping that they keep the best of both.
@hugh i also believe the name should be T-Mange!