The former was published in Portuguese - here's the Google Translate version. "The director of Ubisoft Brazil also reached to comment that the company has already mapped some data to develop a web-based history of the country, but nothing has been decided yet."
Possibly drawing on a different translation, Gamespot suggests that this means the game is in fact "set in Brazil". We've reached out to Ubisoft for clarification.
A move to Brazil is hardly beyond question - as Assassin's Creed 3 producer Francois Pelland has explained, Assassin's Creed 4 could take place pretty much anywhere, anytime, thanks to the liberating capabilities of Animus technology. However, a recent Ubisoft questionnaire points to a return to revolutionary America - not quite as exciting, but sensible given the publisher's monstrous investment in the setting.
Here are seven things Ubisoft cut from Assassin's Creed 3. What's your take on Brazil as a staging ground? The thought of kicking arse as a Stone Age tribesman has a certain allure.