Halo 5 is going to be at least 20 maps on the disc and 343 Industries is going to release 15 DLC maps for FREE :)
Halo 5: Guardians Game Informer Coverage Trailer
https://youtu.be/rhcaePyp_M8
July Cover Revealed – Halo 5: Guardians
http://www.gameinformer.com/b/news/archive/2015/06/09/july-cover-revealed-halo-5-guardians-923520.aspx
