If i'm not mistaking never.
Will be updated directly to 4.12 once it is available in a few weeks.

Pretty much the gist of it tbh, depends how the timing goes and when we need the ISOs

Thank you! :-)

In T3887#68838, @nicki wrote:

Thank you! :-)

Ryzen works with 4.9. I am running a Ryzen 1800x without any problems.

I guess this issue can be closed. Kernel 4.12 was landed in unstable.