The local organisers launched the official site on Friday and it provides information on the venue, hotels, travel etc.,
Registration for the IGF is open until August 15th
At present the agenda is still being drafted, but the theme for the 2014 meeting is “Connecting Continents for Enhanced Multistakeholder Internet Governance”, which after NetMundial and other movements in the internet governance world is hardly surprising.
If you are planning on attending you will need to get a visa, which for EU nationals works much like the ESTA system for travel to the US. Details on the host site.