I just figured that if you scroll down to the Rules/Regulations section in the Halo World Championship Site (halo waypoint) you get directed to the outdated rules! (from November 16,2015). But in the top of the website next to the Watch Trailer button, the link seems OK (The rules are from January 7). I just got into this, when I was checking the rules.
Website Link: https://www.halowaypoint.com/en-us/community/halo-championship-series
November 16,2015 Rules Link: https://content.halocdn.com/media/Default/community/hcs/handbook/hwc-rules-v20151118-1000c443f48346b789f585e9dd28c62e.pdf
January 7,2016 Rules Link: https://content.halocdn.com/media/Default/community/hcs/handbook/hwc-rules-20160107-5980d615b574497faf9c33ba45ed1b4e.pdf
Hope this get fixed, because Maybe a team can go to the wrong link and get the wrong rulesI