I'm hearing things about gears 5, in particular about the new online mode which should replace beast/overun and complete the trinity of arena and horde, actually called "escape".
I will try to collect those in a comment, but take everything with a grain of salt. I trust the users who send those informations, but I'm not 100% on. Still here we are. Take everything with a grain of salt.
The inspiration for the new mode come from a scrapped gears 3's dlc, called "the hub", here an extremely raw footage:
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The dlc consisted in a series of submission from a single hub to protect it, but instead of just defense from the CPU, the team had to attack the locust weak points.
Escape is planned to be a full gaas mode like pvp and horde, and it's considered like an online mini campaign(maybe using Marcus, Jd and Chutani as playble characters? my speculation, not from the source), with an ever evolving nature which is one of the greatest ambitions of this chapter, bringing together online and campaign. It will be closer to gears 3 and judgement due to its four player coop, and it's considered internally as a way to create something akin to the singleplayer dlcs(like shadow of raam and the scrapped act in 2) but that most of the community will play(sp dlc have an extremely low attachment compared to the base game) and that it wont be just an "one and go" thing, but with a dedicated part of the community playing it as an alternative to the other modes(like black op4 which has three different community)
