Here is the official disclosure by the company PR:
Amazon Game Studios is reorganizing some of our teams to allow us to prioritize development of New World, Crucible, and new unannounced projects we're excited to reveal in the future. These moves are the result of regular business planning cycles where we align resources to match evolving, long-range priorities. We're working closely with all employees affected by these changes to assist them in finding new roles within Amazon. Amazon is deeply committed to games and continues to invest heavily in Amazon Game Studios, Twitch, Twitch Prime, AWS, our retail businesses, and other areas within Amazon.
You have a longer coverage piece here:
https://www.fool.com/investing/2019/06/14/amazon-game-studios-reportedly-hit-with-layoffs.aspx