Swift on Windows has been part of the official distribution for a long time:

The blog posts seems to place higher on search results --- maybe arrange to have it edited?

Which GUI toolkit(s) does that install support?

	▲	fassssst 4 hours ago \| parent [-]
		None, you’re on your own. The Browser Company made bindings for WinRT so you can use WinUI imperatively but it’s non trivial to set up.