The worrisome thing is that according to the list of Forma firmware versions at:
https://pgaskin.net/KoboStuff/kobofirmware.html
they released 6 versions in 2018, 8 in 2019, 10 in 2020, but then only 3 in 2021 and the 1 version so far this year. On one hand, fewer releases could be a sign of code maturity. On the other hand..., well it could a worrisome thing.