http://www.gamespot.com/articles/gears-of-war-4-to-include-microtransactions/1100-6438819/
Microtransactions. Meh. At least they are only cosmetic, and earnable in game. I think Halo 5 pretty much hit the nail on the head when it comes to the amount of time you have to play before earning packs, and in that game it's not just cosmetics.
For the maps, apparently they will rotate one free map per month, but you have to buy it in order to play customs. Which my first thought was, people play Gears customs? Also, I don't get the logic behind rotating them out every month. Would be better to just add a new one free each month and leave the old one in. Maybe they will adopt that strategy. Again, like Halo 5. The more competitive shooters with free map DLC the better.