I read that their WILL be global versions and that they will feature satellite connectivity. But I still haven't heard any release date, unfortunately.
Also, it's important to note that Chinese market phones, in addition to different firmware, can also lack physical hardware needed to use certain networks outside of China. For example, my Chinese Xiaomi 15 no longer works on the latest networks in Canada. Data works, but the Canadian network fallback frequency for phone calls no longer works. Strangely, last year this same phone worked fine in Canada.