Gears of War 4 Horde 3.0 Details; New Class System and Defense Building Revealed - GameSpot

Gears of War 4's Horde mode will feature a class-based system, defense building, and cards.
Gears of War 4 is the next installment in the Gears of War series and is exclusive to the Xbox One.

Gears of War 4': Horde Mode Guide

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Gears of War 4 Review - GameSpot

Gears of War 4's Horde Mode will Have a Class System, JD's Full Name Revealed

Gears Of War 4 Gets Rise Of The Horde Update And Free Trial Next Week, Here's What's New