The dev team is still finalizing the numbers. I will be posting an announcement shortly.
Some things may be changed before the rebalance goes live. Others may be changed in the near future afterwards. At this point, it is the intention of the dev team to see that the game is fun for everyone, no matter what region they belong to. We don't like the idea of a region being useless.
Disclaimer: There are different ideas of what "useless" means, and mine may not be the same as yours.