According to Blizzard, Global Play will allow players to freely switch between regions while retaining your game language and user interface. However the drawback is that your character, profiles, stats and ladder positions will not carry from region to region, which means that switching regions would be equivalent to a fresh start. This might not be a big deal to the casual player who is looking to play with friends, but for the more competitive, this could be inconvenient as they’d have to work their way from group up. In any case Blizzard will be releasing more information on Global Play soon, so stay tuned for updates!