https://www.cnet.com/news/e3-2018-watch-the-first-gears-of-war-5-trailer/

Gears of War 5 is official, and it's coming out in 2019. 

And yes, that mysterious necklace teased at the end of Gears of War 4 finds its way into the story. So where are the COGs headed next? "Back to where it all began," a place that it's safe to assume will feature Locusts, waist-high walls and plenty of chainsaw guns.