The team working on WPML plugin is interested in sponsoring/helping with WordCamp site translation.

They says they can:
1. multilingualize the site
2. translate the site theme and contents with icanlocalize service (list of supported languages)
This is only for site you host; not wordcamp.org hosted ones.

Please comment or contact them if you are interested.
http://wpml.org/home/contact-us/