Windows 10 is a distribution created by Microsoft. Microsoft Windows 10 was described as a "service system that provides continuing updates to its services and activities."
Windows 10 Insider Preview builds are delivered to Insiders in three different rings. Insiders in the fast ring receive updates prior to those in the slow ring, but might experience more bugs and other issues. Insiders in release preview ring do not receive updates until the version is almost available to the public, but are comparatively more stable.
Version | Code name | Marketing name | Release date | build number
1507 | Threshold 1 | N/A | July 29, 2015 | 10240
1511 | Threshold 2 | November Update | November 10, 2015 | 10586
1607 | Redstone 1 | Anniversary Update | August 2, 2016 | 14393
1703 | Redstone 2 | Creators Update | April 5, 2017 | 15063
1709 | Redstone 3 | Fall Creators Update | October 17, 2017 | 16299
1803 | Redstone 4 | April 2018 Update | April 30, 2018 | 17134
1809 | Redstone 5 | TBA | Late 2018 | 17686