The weapons update previously found on public test servers has been pushed to live.
We know this update has been lingering for quite a while on public test servers, although we're fairly happy with the weapons themselves and believe it belongs in the future Legions gameplay - the current user interface is currently not up to the standards we expect this game to have.
So even though loadout support isn't ready, I've pushed the changes to live servers. Hopefully in a future update we'll have a better UI for loadouts to make things easier, but until then it's not in the best interest of the game to have 2 different versions running in parallel - this wasn't what public test was for.
So, enjoy the update!