[synchronise]

Actually, there's not been much change from the original fork of FirefoxOS besides the UI changes to be better for non-touch devices.

GerdaOS (LineageOS for KaiOS) allows people to import and run FirefoxOS packages without modification, though many apps will need some changes to allow it to work without a touchscreen.

The unofficial rumour mill says that with the extra investment from Google, KaiOS will probably shift to Chrome(ium) at some point in the future, but that's just a rumour and remains to be seen.

[metildaa]

I doubt KaiOS would switch to Chromium, the focus seems to be using near zero resources while remaining somewhat fast.

Mozilla spent years with dozens to hundreds of devs working on getting it to be snappier than every other low end phone, short of Google paying for this type of dev work on KaiOS, there will likely be nothing more than security patches and cosmetic changes to KaiOS.