Blizzard have announced the imminent arrival of patch 1.1 for StarCraft II, bringing with it access to the North American Battle.net servers.
With this patch, the in-game region selector will be made available so a separate download will not be necessary to access the North America region.
In addition, 1.1 will add support for left-handed hotkeys, NVIDIA's 3D Vision, as well as numerous bug fixes and game customisation additions. You can read the list of planned changes on the StarCraft II Situation Report.
Patch 1.1 will be available for download this Thursday.