Windows 10 Mobile Preview: new build available Build 10080
Microsoft released new build of Windows 10 Mobile Insider Preview. As said Gabriel Aul, a few days ago, this version of 10080, which, in addition to improvements in the interface, allows you to install updated apps from the Suite of Office Mobile (Word, Excel , PowerPoint and OneNote), as well as the new Store Beta, and new apps «Camera», «Video», «Music» and Xbox. In addition, this new Assembly can be installed on the Lumia 640, 640 XL, 930/Icon and HTC One M8.
If your smartphone is already a Windows 10 Mobile Preview and Windows Insider app is enabled Fast Ring, then just go to device settings in the «Update and recovery» and search for new updates to download and install a version of 10080. Otherwise, you need to install the Windows Insider app and join the Windows Insider Program.
If after testing Windows 10 Mobile Preview you will want to return to Windows Phone 8.1, use the desktop app to the Windows Phone Recovery Tool.
Remember that installing the Preview may void your warranty for the device and problems of a different nature in the installed applications and the system as a whole, so it is better to refrain from installing the preview, and to wait for the final updates.