They have announced a bunch of the changes to expect in the next update as well.
For competitive along with the new ranks, there will be less divisions dropping it down to 4 from the previous 5.
They are wanting seasongs to be around 4 months as everyone felt season 3 went on forever, they are unsure when season 4 will end.
They are re-working matchmaking.
Also
Neo Tokyo is being removed from the Casual and Competitive playlists, and will return as a standard format arena at a later date.
The map dislike and like will be more understandable.
If half of the players in a server dislike a map, it will appear 50% less often.
If one player likes a map and another player dislikes it, it will appear as often as normal.
If all of the players in a server dislike it, it will now never appear.
All of this can be found
here.