Although some retailers are saying they don't expect to have inventory right away, Samsung is officially claiming that it has launched the Galaxy S III in 28 countries today. That's a massive launch, but the phone maker has even grander claims, saying it will be offered by a grand total of 296 carriers in 145 countries by July. The last rumored date for the US and Canada was June 20th, which would obviously mean Samsung will have done a faster (and perhaps more successful) launch with the Galaxy S III than it did with its predecessor. The Galaxy S II reportedly owns ten percent of the total Android ecosystem, so if the Galaxy S III comes even close, Samsung will have another blockbuster on its hands.
In any case, if you're in one of the 28 launch countries, which include much of Europe and the Middle East, you can begin your hunt for a Galaxy S III today, though obviously we suggest you absorb our comprehensive review first.