You might have heard the news on twitter or on the hackerbeach blog: Hacker Beach #4 is a go and will take place in Ecuador this year. Râu Cao has written a post with the basic facts. But if you want to join you should hang out in IRC in #hackerbeach on freenode where most of the chat is tacking place. 
So, see you in Canoa. (but make sure to keep an eye on El Niño)