Sorry if this has been covered before but how often is there an update say now that owlfolk are out.. would there be an update too the class before they either drop it or out out for official release?

It has happened before with psionic stuff. But it is very unlikely. Usually they release UA, get feedback, then if responses were favourable, they print in an official book.

So how do you know if they change something in u/a

They release a new version of UA.

Gotcha been using pvp discord and there is a alias for races but only offical why I'm asking