Last week, Microsoft's Yusuf Mehdi wrote a blog post discussing Microsoft's Anniversary Update for Windows 10. Normally, that wouldn't be news for us, but he did briefly mention one tidbit that confirms one rumor that's been swirling since E3:

With the Xbox Play Anywhere program, you can buy a game once and play on your Windows 10 PC and Xbox One with shared progress, shared game saves and shared achievements. Every new title published from Microsoft Studios will support Xbox Play Anywhere and will be easily accessible in the Windows Store.

All Microsoft titles moving forward will be playable on PC, including the inevitable Halo 6, with full cross-play capabilities (on a related note, Microsoft said competitive multiplayer would remain exclusive to each platform at the discretion of developers, so don't worry about keyboard vs controller in shooters). Thanks to shared achievements, separate lists for Microsoft Windows 10 titles are a thing of the past. It seems they'll no longer be stackable.

This confirms two things for us:For some, this is big news. You could have drawn this conclusion after MS's E3 conference, but it's nice to get official confirmation.