Starting on April 18, the Gears of War 4 multiplayer beta will begin. Anyone who has played Gears of War: Ultimate Edition on Xbox One or Windows 10 will receive tokens for early access to the beta.
The early access period for the beta will be available from April 18 through April 24. After this, the open beta will begin on April 25, in which all Xbox Live Gold members will be able to participate. The open beta will end May 1.
Major Nelson posted a blog earlier today noting, "we're extending the timeframe for Gears of War: Ultimate Edition players to qualify for early access to the Gears of War 4 beta from March 1 to April 11. To qualify, just log on to Xbox Live and play Gears of War: Ultimate Edition on Xbox One or Windows 10 by 11 p.m. PDT, April 11."