Microsoft has released the latest Windows 10 preview ‘Dev’ build of the Sun Valley update. Microsoft is offering a glimpse at some of the new features and changes they are developing. These features range from a sneak-peek of the upcoming Sun Valley animations to a new File Explorer layout. Some of these features we love, while others not so much. Below we have outlined the new changes so that you can decide on your own. Microsoft also plans to enable new animations when opening and minimizing windows.
Source: https://www.bleepingcomputer.com/news/microsoft/a-look-at-upcoming-windows-10-features-you-will-love-or-maybe-hate/