Windows 10 Redstone 5 is now in testing with Insiders in the Skip Ahead ring, and Microsoft has already thrown in one of the bigger features coming in the next update, scheduled for release this Fall. Windows 'Sets' is back, and is a little more polished than when we first saw it in testing during Redstone 4 development.

Microsoft rolled out build 17618 to Insiders in the Skip Ahead ring last week, and is the first build to include Sets to a larger group of people. Here's our hands-on with Sets, showcasing some of the early implementations Microsoft is working on for Redstone 5.

The only other notable change in build 17618 is that Cortana's Settings app category has been renamed to "Cortana & Search," with no other changes apparent within the category as of yet. Perhaps this change is in preparation of Microsoft splitting up Cortana and Search in Redstone 5? Time will tell.

Make sure you check out our list of things we're expecting to see in Windows 10 Redstone 5, and let us know in the comments if you're already testing the latest Redstone 5 builds in the Skip Ahead ring below!