Release notes of this version can be viewed here.
Disk Cleanup (Cleanmgr.exe) is a Microsoft software utility first introduced with Windows 98 and included in all subsequent releases of Windows. It allows users to remove files that are no longer needed or that can be safely deleted.
With Windows 10 Microsoft will be retiring Disk Cleanup tool and replace it with Storage Sense. Cleanmgr+ is a modern take of Microsoft Disk Cleanup and comes with all the features that the original Cleanmgr.exe offers plus several extra ones. It uses identical technical terms and descriptions and does exactly the same thing that the classic Windows Disk Clean-up utility does.