Exactly, turning windows into a rolling release cycle thing is a disaster. At the office you can have different teams pinned to different releases by mistake and because WSL features are tied to releases you could have one team able to use docker for example and another team pinned by their department to an earlier release of windows 10 with a version of WSL that doesn't support use of docker or has some other vital but missing feature. However because of how WSL is integrated with the NT core it has to be pinned like this. For Microsoft the ideal was to enable them to innovate on a continuous basis but its really turned into quite a train wreck in practice.

But can you run jackd on chromeos, can you run bitwig and renoise and other pro audio linux apps or are audio apps limited to pulse audio?

Yeah sort of makes the ipad look frugal LOL.

The panasonic toughpad with ics android http://www.panasonic.com/business/toughpad/us/best-android-rugged-tablet-overview.asp

Its kind of tongue in cheek, but its true, however until all of the elements of html5 like browser media capture are in place you will still see some apps having to temporarily rely on flash. Webcam software is a good example. Eventually when you have html5 media capture you won't need that feature from flash, so its on its way out, but there are still some classes of app that need it.