BetaWiki:Featured article/2024-08
Windows 10 build 10240 (th1) is the official RTM build of the original Windows 10 release. It was first released to Windows Insiders in the Fast and Slow rings on 15 July 2015, and was later made generally available worldwide on 29 July 2015. It was also made available as part of a free upgrade offer for Windows 7, 8, and 8.1 users until 29 July 2016.
It contains very few changes over build 10176 (th1). However, it does include several changes over build 10166, the last preview build in the Threshold Wave 1 release cycle. Despite being a finalized release, several features from older versions of Windows remain accessible in the build, and a preliminary version of the dark theme is also included as well.