Yeah this is pretty much confirmed. Polish and Czech Reddit users found the new companies in local business databases. I think the Czech subsidiary was registered mid December and the Polish on January 4. they also have open positions for these 2 countries on Tesla`s career site. (May be a bit hard to find as the location is called "remote", but you can use Ctrl+F on the career page with the country name. Rumor has it the Polish store will open in February as per the Reddit thread.