Microsoft is testing a new build of Windows 10 today (17666) that includes some new features that will be available later this year. The biggest addition is a new cloud-powered clipboard that will let Windows 10 users roam their clipboard contents across devices, and presumably eventually to Android and iOS devices. The cloud clipboard includes a history of what has been copied, and it will sync in the same way Sets and Timeline do, so you can copy from one PC and paste on another.