Viltrox is trying to connect and negotiate with Leica for the L-mount licensing, according to this post on YouTube:
This means that Viltrox could join the L-Mount Alliance. There are already several Chinese companies that make L-mount lenses without officially being part of the L-Mount Alliance:
New 7artisan 18mm f/5.6 full-frame lens for L-mount announced ($71.20)
Source: YouTube