Since the release of Windows 10, Microsoft has been pushing for updates to just happen. They want users to receive each of them, because then it's harder for malware authors to take advantage of known vulnerabilities and it's also easier for Microsoft to update Windows (because it would have fewer permutations of patch levels). These updates would arrive with the useless name “Cumulative update for Windows 10 (some version)” and no further information, besides a list of changed files without any context.
Now with slightly less blindness…
Microsoft now has a page that lists the general improvements as a bullet-point list. It's not an extensive list of changes, and most of them are related to security and privacy, but that is to be expected now that Windows has moved to a build paradigm. They are broken down by build level, though, which lets you see everything that happened to 10240 since it launched separate from the list of everything that happened to 10586 since it was published.
This is positive. Microsoft should have done this for a while, and I hope they continue indefinitely.