What does "Top 10% promote" mean in GAC now?

From how I read this, it means that each week (event), you can move up (or down, also) a DIVISION (Chromium 3 to Chromium 2, for example); and at the end of each month (season), you can move up (or, again, down is also possible) a LEAGUE (Chromium to Aurodium, for example).

Also, i read that "top 10%" means DIVISION 1...so if you're in Chromium 1 at the end of the month (season), then you are promoted to Aurodium 5 next month (season). and again, demotion, or relegation, is also possible if you finish the month (season) in Chromium 5, then you go down a LEAGUE to Bronzium.

again, that's the way that I understand it....i think i'm right, but with this bunch who knows???



MATCHMAKING
First, let’s dive into how the Matchmaking system will be reworked as it will impact many of the other changes that are discussed below.

Grand Arena will now use a more traditional ladder system based on Skill Rating. This means your progress in Grand Arena is now detached from your GP and you will climb the ladder over time instead of trying to reach the top each Season. Each Season will still last 4 weeks but players will now only move between Leagues at the end of each Season and Division changes can occur after each Event.

Upon entering the new GAC, Players will be granted a starting Skill Rating based upon their Galactic Power. Initial seeding of League and Division is then based upon this Skill Rating. After that point, Skill Rating will only be updated through Wins and Losses during a GAC.

Your Skill Rating will be adjusted after each event and the group of opponents you face will be matched based on your Skill Rating. All players that finish the season in the Division 1 (the top 10% of the League) are promoted into the next League up and players in Division 5 of their League (the bottom 10%) will move down. (NOTE: You will not face another player outside of your League)