Microsoft has released Windows 10 Insider Preview Build 18908 to Insiders in the Fast ring. This build includes numerous bug fixes as well as a lot of new features for the Your Phone app. Microsoft is continuing to add new features to make the app an integral part of a mobile user’s life. With this build, Microsoft is adding new features such as: Screen Reading, Phone Screen and In-line reply. These features will be gradually rolling out over the next few days, so if you do not see them immediately, do not be concerned.
Source: https://www.bleepingcomputer.com/news/microsoft/windows-10-insider-build-18908-brings-your-phone-improvements/