Just have manually installed from the https://images.ecloud.global/dev/FP3/ and indeed end up with a different Image: /e/OS 0.13-2020120789006. According to earlier reply from @Anonyme there is a Dec 7th upgrade for FP3. I can see that date now also in the Image Name after the manual install.
BTW CoronaMelder App not working. Magic Earth is.
I advise not to do the manual install, because again, complete wipe of data. I have had to add my /e/ account to the phone and Wifi, etc.
So unless someone from /e/ support will correct me, I stand with my finding that the offered update in the system updater from the 8th December is not the one for FP3. I think people in this thread have been offered the correct image in the system updater: Does anyone have a working December 7th Update (especially FP3).
I hope /e/ support will react and clarify. As i am an almost newbie to /e/ and am just following the HOWTO’s.
Hopefully hear soon.