Since there is a limit of three replies per topic for me at the moment, I am posting my update here:
It is all a bit confusing.
I asked support, why it still shows 0.13 as current version and with 0.13.1 in the pipeline. This is their response:
the “0.13.1” update was just an update of the recovery mode, not of /e/OS, which is why /e/OS is still on 0.13 despite of the fact the update was called “0.13.1”.
Now when I get into recovery mode, it shows version 0.14, but wasn’t this officially skipped?! Also, a friend of mine bought a Fairphone with preinstalled /e/OS 0.14.
Anyway, I just hope the new update shows up within this week and this gets fixed for good, also for the future. I suppose it is still live and learn.