Convergence of major operating systems is always a good thing, but note it is strictly x86_64 only!
The idea behind it is not new at all btw. See Windows POSIX efforts, which used to be delivered as standard with (some) Windows Server editions and is still available as a bolt-on extra called Interix.
(some would also say that much of Windows is a multiple rip-off of UNIX idea's anyway)
Opinionated:
I foresee that is the end of IIS in the near future. Which is also a good thing.
Even more opinionated:
Linux is a better server OS for the web and - to some extend - more secure, but Windows has a superior user experience - for some reason

See
https://en.wikipedia.org/wiki/Microsoft_POSIX_subsystemGiven your enthusiasm that is probably since long before you were born....

Maybe a case of history competes with itself?!
