This is the first "AAA" game landing on the Windows Store...really curious to see how it fares haha.
I suspect how the game fares on the WinStore versus Steam will inform Microsoft's decision on what to do with Gears UE and other paid Win10 games, especially considering Gears still has no confirmed release date outside of a vague "early 2016". Its F2P titles (Fable Legends, Killer Instinct, etc.) will undoubtedly remain WinStore-exclusive regardless unless they're in dire need of a shot in the arm.