While I don't know if the date is correct (it might slip); I do believe that Amazon will eventually open a Kindle Store in Brazil. There have been any number of signs that it's coming, including news that Amazon is hiring managers there. In fact, I think this was one of the markets that they had in mind when they launched the new Kindles back in September.The Kindle 4, which at the time was the only new Kindle available internationally, supported Brazilian Portuguese from the day it shipped.
When they do launch, Amazon will pretty much have the ereader market sown up. A R$ 200 Kindle
might be expensive to outsiders, but it is cheap compared to a R$ 430 Sony Reader, and it's considerably lower in price than the Alpha Plus (R$800) ($800). And if Foxconn gets around to building those 5 factories in Brazil, the Kindle will get cheaper.
On the other hand, ereaders are just half the battle. For Amazon to really dominate the Brazilian ebook market, they will first need to sign publishers, and I don't know that they will have much luck. Right now the retail giant is not in good odor in the US, and I am sure that Brazilian publishers are reading the same stories we are.
image by over_kind_man