Question on updated openmaptiles-server

I read in the stack overflow post below that a server is in BETA (or maybe has been constructed) that can use mbtiles that are not downloaded from OpenMapTiles.com (basically the user can use his or her own mbtiles).

The quote below is from: https://stackoverflow.com/questions/50727492/creating-mbtiles-using-maptiler-for-openmaptiles

"....Yep, or wait for MapTiler Server (or contact us to become one of the early adaptors). – MapTiler Jun 9 at 8:06"

Has this new MapTiler Server been released. If it hasn't can I become an early adapter?