Xbox One games, whether purchased at retail or downloaded through the Microsoft Games Store, will adhere to the same standards for Achievements and Gamerscore.
"On Xbox One games are games. All games follow the same policies for achievements and Gamerscore," a Microsoft spokesperson told XBLA Fans. The statement was spurred by a published Achievement list for the Xbox One version of Halo: Spartan Assault, which was announced for Xbox 360 and Xbox One late last month. Xbox 360 Achievements says the game will have 1,000 Gamerscore.
The Xbox One, which comes with an improved Kinect sensor, controller, chat headset, HDMI cable and Quick Start guide, launches next week, on November 22, in 13 different markets. The console will cost $500 in the US, €500 in Europe and £430 in the UK.