The Brazilian server of World of Warcraft will start today. Does anyone know the place to download the Portuguese Language patch for my WoW client?
When available, the Portuguese Language Pack will likely be on this download page. The one for Spanish is already there, so it's likely that Portuguese will be there as well.
You may also want to keep an eye on the WoW Brazil FAQ page, as that's likely to have information relevant to your question as it is available.