Looks like Blizz is adding the areas together.
In conjunction with the start of Season 3, we’ll be linking the European and Russian StarCraft II communities together; North America and Latin America will also be linked together, as will Korea and Taiwan.
It should be pretty exciting for Taiwan people, as you have some famous pro gamers there like Sen and Linda Liao to finally get to pit themselves against the Koreans on those servers. As for the european and russian mix I wonder if there will be language difficulties? But I guess everyone understands the GG, unless it turns into Gee Gee Gee.
Other stuff from that particular FAQ:
Q. When will this happen?
A. The region linking process will happen at the same time as StarCraft II Season 3, which is currently scheduled for the week of July 25.
Q. Do I have to do anything?
A. No — linking will happen automatically.
Q. Does this mean that the ladders of linked regions will be combined?
A. Yes, players from linked regions will be combined into a single ladder. This means you’ll have access to a larger pool of players at all skill levels to play against, which will improve the experience for players no matter what league they play in.