Hi @Tajrebatee

it's just a normal update and safe to be applied to a live site. I updated my sites, including modules, to UNA 13.1.0-B1 today and everything went smoothly. I haven't seen any new bug so far. Congrats and thanks to the UNA team. Nice work!

This update doesn't include the new messenger. Maybe the next one (UNA 13.1.0-B2.) will.