The launch of Quantum Break on PC was confirmed last week, and was soon announced as a Windows 10 exclusive. This will be the only operating system that will support Remedy's game, and if they want to buy the PC version, you will have to download the game through Windows Store.
Aaron Greenberg, through a new Larry Hryb podcast (you can hear it here), confirmed that Quantum Break will not be available on any digital store except Windows Store.
Quantum Break is now confirmed as a genuine Windows 10 and Xbox One exclusive, scheduled for release April 5. You can know more about this time warping and branching action game on our recent preview.