I can't find the original source for that "And they are coming back in Windows 10" quote - it's all over news articles but not being returned when I search for it.
The official Windows upgrade thing says: Solitaire, Minesweeper and Hearts Games that come pre-installed on Windows 7 will be removed as part of installing the Windows 10 upgrade. Microsoft has released our version of Solitaire and Minesweeper called the “Microsoft Solitaire Collection” and “Microsoft Minesweeper”.
Also, Google's suggested search is a bit sinister...
EDITED: 2 Jun 2015 20:59 by BOUGHTONP