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...
It's definitely not being returned by Google though.
google.com/search?q="And%20they%20are%20coming%20back%20in%20Windows%2010"%20site:blogs.windows.com - no results for the phrase; first result for unquoted version doesn't mention hearts, candy, or coming.
I shouldn't be surprised given how fucking useless Google are, but their incompetence is not usually so directly obvious.