Yeah but that begs the question of when after? It also begs the question of how long will they let things slide? For instance, the handgun freeze could have been brought into force sooner than they did. Will the same happen with this? Nobody knows.
If you've got the money and want mags then buy them now, because once they drop the regulation changes the market will go crazy, and with it some shops will start gouging (not saying TNA will, but we all saw what happened with handgun prices in some shops).
My guess is they'll do it quietly via OIC over the Christmas holidays.