StudioAssist is useful for us but available in beta version. Please let us know when it will be available in the next stable release
Keep an eye on the release notes.
As @xuan.tran has answered during our recent Ask Katalon Anything activity, it would seem that StudioAssist will come to the official versions of Katalon Studio soon.
So, my bet is that it would be released some time in Q4 of this year. Please keep an eye out for our release announcement by going to the new-release tag.