Ok, I understand.
But so sorry, I downloaded this image in the early days, more than a year go, can't even remember - could even be end of 2017, probably beginning of 2018. Right when XU4 support began in Armbian. Still have many XU4s on Jessie.
You used to have Jessie on the site to download. I am sure that you might remember.
This is Armbian Debian Jessie, OMV I installed myself on top of it. Been running it continuously ever since - and have no opportunity to Jessie->Stretch.
Nevertheless, I just posted this to inform you of what happened. I wasn't expecting any action - I solved the problem myself in a quick and dirty fashion, just wanted to pass it on.
I don't quite understand the paranoia - I couldn't have downloaded this Armbian anywhere else and if it is suddenly too old to be considered in the code, I will take that into account and update to Stretch as soon as I have time or choose some other distro, although on some of the other Jessie systems of mine, that move has many consequences for the software running on them.
But if supported Armbian stuff can just dissappear suddenly, maybe it would be nice to know in advance what the lifetime of Armbian Debian Stretch will be so that one can plan on that.