arena changes

Are these arena changes, like removing the battle rifle for everyone, or is that just a halo sports league change or whatever its called? I quickly read through some of the patch notes and if that is for everyone I find that strange…why would non league players be subject to that kind of stuff?

They changed the entire Team Arena playlist to match the pro league maps/gametypes, Team Arena is the competitive playlist and has been since launch. They probably keep it that way so when the average viewer tunes in they know whats happening.