cross-play support ?

will there be cross play with pc and phone? since most players for this game are on those platforms

All that's known is that they are supposed to explain online play sometime this year. That said, so far everything sounds like this is a separate game from other digital editions, so I expect it would not be cross play if so.

I am Wondering if Steam is getting a new version of Catan or will this be thru the F2P Catan Universe game on steam

Oh it's very much separate from Catan Universe specifically.