A:Answer For 4k movies, its worldwide unlocked. For blurays and dvds, the region specific movies will still apply:
"When it comes to regional restrictions, the good news is 4K Blu-ray discs have just one region code: worldwide. Essentially, they’re region-free. They can be played on any 4K player, in any part of the world.
However, your new UHD Blu-ray player will still have to observe the regional restrictions for DVDs and standard Blu-rays that continue to exist."
https://www.whathifi.com/us/advice/ultra-hd-blu-ray-everything-you-need-to-know