Late last week Microsoft released what they call the Creator's Update for Windows 10. This is a major update; being only the 2nd major update to Windows 10 since it was released. It was given the release number 1703 (indicating March 2017).
The 1st major update to Windows 10 was 1607—also referred to as the Anniversary Update—which, as the number indicates, happened in July of 2016.
I have not yet downloaded and installed the 1703 update. I think I will leave that for at least a month in order to see what the reports are on how well it goes. Waiting a month also gives Microsoft a little time to fix up any overlooked niggles in the update process that don't work quite like they expected.
If you are interested in finding out some of the big changes that the Creator's Update brings to Windows 10 before it gets installed on your PC then go to Paul Thurrott's site (you can find the link in my sidebar) and pick out the various posts Paul has done in relation to this Creator's Update.