Microsoft is now testing Windows 10 build 17718 internally. The new Windows 10 October 2018 Update (Redstone 5) build 17718 (10.0.17718.1000 rs5_release.180713-1537) was compiled on July 13, 2018.
Previously, Windows 10 Redstone 5 build 17713 was released for Fast and Skip ahead Insiders. The latest insider build includes a big list of improvements for Microsoft Edge, Notepad, Windows Defender Application Guard, and more. In addition, build 17713 has added a new “Web Sign-in” option to the Windows PC. Web Sign-in enables Windows logon support for non-ADFS federated providers (e.g. SAML).
Windows 10 April 2018 Update is also now available for end users. The latest major update comes with new features like Timeline, Focus Assist and more. Apart from this, it includes various changes and improvements. You can download the ISO files from the link below.