Do you ever feel like software is just changing back and forth for no good reason? Windows 8 dropped the Start button, then Windows 8.1 brought it back—both decisions being touted as big improvements. Windows 7 brought Aero transparency before Windows 8 dumped the transparency, and both decisions were proclaimed design improvements at the time. Now, Microsoft is bringing transparency back again with Fluent Design.
Source: How-To Geek