I have recently bought a FP3 on the fairphone official website with the /e/ os install in mind.
At this time the FP3 was marked with the easy installer link in the devices list but it was a mistake.
So I didn’t go in the manual install guide.
Then I realize that the OS shipped with the phone is android 10 and there is a warning in the manual guide :
Hi @AChillElephant the FP3 Q builds from /e/ are being tested. We expect them to be released by next week. The support for FP3 from the easy installer was done by @Ingo_FP_Angel and should also be available by next week.
The first time it has to be a manual update…subsequent builds come OTA. The updater blocks any version updates and the code still has some bugs which needs to be fixed. For example I got this interesting bug when testing on a different device…this was not even an OS upgrade
and also the link goes to the LOS wiki