The Coalition has finished work on a new patch (Title Update 2) for Gear of War 4 that makes available two new maps, Glory and Speyer, for Season Pass owners. Both maps will be available in public playlists for everyone, along with Private Matches for Season Pass holders starting December 13. When they arrive, Gridlock and Relic will be rotated

Source: Hot Hardware – Gears of War 4 Title Update 2 Adds Glory And Speyer Maps, Bug Fixes For Xbox One And Windows 10