Thanks @Andrew for keeping everyone updated in my absence!
I just got some reliable internet in my hotel in LA, where I am holed up, waiting for my flight home, so can reply at last.
To expand on Andrew’s news a little (because you’ll all discover this when the update goes live), the feature that held us up was redeem codes… Sony have asked us to remove them from the PS4 version of the game, which makes me sad because we love jumping online and handing them out 