I've noticed that a lot of my fellow MediaWiki devs using OS X or Linux
don't have much experience with Windows 10's new 'Edge' browser, so I
wrote
up some notes about testing with it and what to expect regarding versioning
and bug reporting:
https://www.mediawiki.org/wiki/Microsoft_Edge_browser_testing_notes
In particular, note that although versioning of the browser engine is tied
to the Windows 10 operating system, the OS is updated much more
aggressively than older versions of Windows.
The 'Windows Insider' preview release program also gives a chance to check
new engine features for bugs, or confirm that a reported bug has been fixed
correctly, before major OS updates go out. Not as good as the nightly
browser builds we get from Mozilla and Google, but it's a big improvement
from IE days. :)
-- brion