Update: The trial is on now!
Original story: Xbox One and Windows 10 users will be given ten hours of free trial access to Gears of War 4 next week.
The trial provides access to the entire game — including Versus and Horde modes — during the timed ten hour period. Access is provided between 9 June and 15 June.
Anything earned during the trial, including Achievements, Cards and campaign progress, will As an incentive, will be the property of the player. A further FAQ on the trial is available here.