I have upgraded 2 servers to the latest YNH release, 11. That also upgrades Debain to the latest stable. All worked great. The @YunoHost team did a fantastic job. Now let's see how's going to be for my other servers that host some 40 websites between them :D - I will try to update the TROMsite server that hosts all of our websites except trom.tf, maybe next week or the week after. Only after that I can dare to try the TROM.tf upgrade.