Blizzard also present us with a nice and long Q&A that clarifies the details.
Q: Who is eligible to play on the North American servers? How much will this cost?
A: All players, including those in the regions of Hong Kong and Macau, who purchase the English Southeast Asia/Australia/New Zealand standard or Collector’s Edition of StarCraft II: Wings of Liberty will have the option of playing on the North American Battle.net servers in addition to the Southeast Asia/Australia/New Zealand servers. The option to play on North American Battle.net servers will come at no additional cost to players who have purchased the Southeast Asia/Australia/New Zealand version of StarCraft II: Wings of Liberty.
Q: How will access to the North American servers be granted?
A: All players with a copy of the Southeast Asia/Australia/New Zealand version will automatically gain the ability to access the North American servers -- this will be handled through Battle.net account management.
Q: What will happen with my Southeast Asia/Australia/New Zealand Battle.net account?
A: Once you get access to the North American Battle.net servers, you will have access to both regions for online play. You can choose which one to play on at any given time, and can switch back and forth at will.
Q: How will my friends list and rankings be handled?
A: All account-specific data, including friends lists, rankings, achievements, statistics, titles, and unlockable rewards, will be tracked separately for each region's Battle.net servers, and will not carry over between them.
Q: Will I be able to play on any of the other StarCraft II: Wings of Liberty regional servers?
A: No. Players who purchase the Southeast Asia/Australia/New Zealand version of StarCraft II will have access to the Southeast Asia/Australia/New Zealand and the North American Battle.net servers. No other multi-region play will be available at this time.
That may very well be the first step to cross-realm play that we all want so much.
Links
Battle.net - Source
