Why you think there wouldn’t be linux (kernel) upgrades? Are there tweaks not getting upstream? It seems their SW is FOSS, so they could contribute back if they want (though contributing to linux is not as easy, hehe)… And for the distro, besides linux support for the HW, it seems like a really polished plasma mobile (at least both jingos and cutefishos desktops seem Qt based). And plasma mobile on top of manjaro is what pine64 chose for its phone, and I guess tablets. So it seems one might be able to move somewhere else, as long as there’s linux support for its HW.

Though I’m betting more on pine64 to be honest, :)