Windows 10 Mobile users are already having the option of using several tiles in one by combining tiles on the home screen. The users who recently installed the leaked Windows 10 Creators Update with version number 14997 can find the Combining tiles feature available on their desktop.(see below GIF)
In The desktop version the unification tile works in the same way as in the Mobile version and you can group and drag one tile on top of another. Opening the Single tile will give you access to all the applications contained in the Group/Combined Tile.
The new build version 14997 also includes various changes and improvements that Microsoft will be releasing very soon in new Insider Builds. With Support for Voice Control Cortana, Blue Light mode support are some of the new features which are expected to be rolled out in the new year with the new Windows 10 Builds for Insiders.