Next week, the latest game in the Survival Kids series comes out in Japan. It March of 2008 Survival Kids: Chiisana Shima no Ookina Himitsu might show up outside of Japan under the name Lost in Blue 3. EB Games just put Lost in Blue 3 in their database. While this isn't a definitive confirmation of another coconut eating adventure on the Nintendo DS, it's a first sign that we may see an English version in the near future.
Update: Gamefly says the same thing. Things are looking more promising.