Next year's Windows 10 comes bounding into the Slow Ring, which means 19H2 waits in the wings
https://www.theregister.co.uk/2019/11/12/slow_ring_20h1/
On the eve of Patch Tuesday, Microsoft began shifting Slow Ring testers onto 2020's Windows 10.
The move is an indication that the company reckons 19H2, aka the November 2019 Update, is ready to be unleashed on the General Public. It also means that Slow Ring testers will finally be able to get their hands on the Windows Subsystem for Linux (WSL) 2, if Penguin-based shenanigans are their thing.