I once read that the UHD players are region code free for UHD discs, but that the current codes remain in place for normal Blu-Rays and DVDs. In this case, for Blu-ray/DVD B/2.

uhd dev. fegion free...but with the USA double packs e.g. with lionsgate discs (the last witchhunter) only uhd disc region free but the normal blu ray is region 4 locked it always depends on which studios generally encode blu rays