Gears 5 came out around 5 years ago. Considering the series has consistently rated very well, I doubt they killed it. They're probably just doing the modern AAA thing of spending a decade and a half working on a bloated game with unlimited budget. I bet we'll see one of those logo drops for Gears 6 soon (next showcase is in June), the game will release in a buggy/broken state with a flawless in-game store, the studio will get shut down, and then they'll announce the new Elder Scrolls game while everyone is pissed.