Developer The Coalition has been quite shy on dropping any nitty gritty details for Gears of War: E-Day just yet, which is perhaps understandable given that the game won't be out until 2025 at the very earliest. However, the studio was pressed about multiplayer modes over the weekend, and while it hasn't gone into specifics, it sounds like fans can expect this to be a fully fledged Gears game - multiplayer and all.
When Windows Central asked about Gears of War's "frenetic multiplayer combat" returning in E-Day, this is what the team had to say:
"I would say, this is the next mainline Gears game,
Gears has a pretty clear DNA for gameplay modes, so you can probably anticipate where we'll be going with E-Day."
Again, there aren't any specifics here, but we'd say this answer strongly hints that the series' PvE Horde mode will likely feature - alongside the typical set of PvP multiplayer modes that the franchise is known for. We can't imagine a mainline Gears game without them nowadays!
While the team continues to be sheepish about such modes, we are starting to get more information about the game's campaign. We know that The Coalition is focusing on the "scary moments" in Gears of War: E-day's story, which is music to our ears.