nothing is happening to your PvP comms. the new PvP gear is bought with WZ comms and RWZ comms, just like now.
In previous updates you lost the "good coms" they were converted to the lower coms. Extra was turned into credits. Just because it is currently like this on the test center, doesn't mean live will be the same.
Granted those were champion and BM coms etc, but I don't see them letting us be geared out completely on day one.
I would be ecstatic if it were otherwise but we will see.