At time of writing, only the demo is available for public access.
That being said, this game is amazing, and has incredible potential. The gameplay is very fluid and takes very little getting used to. The graphics are absolutely stunning - and you don't have to sacrifice performance for it to look good. The base building is intuitive and easy.
While much of the customization is still locked, given what I can see, it looks like it'll be a great system. Definitely one of my most expected games of 2021.