The current island (October 7, 2011) is Mystery Train. The next island will be Game Show Island (November - December 2011).
There isn't more to Poptropica. Poptropica= all the islands.
there is no boss on poptropica you just have to do all the island but i am not telling you how to do all the islands
There is no prize for beating all of Poptropica's islands.
To beat all the islands you have to watch the poptropica videos to beat all of the islands. from Alvin if you want to know where use YOUTUBE
beat all the islands
You can play in the ad-games released occasionally, or in the multi-player games. Eventually another island will be released.
You have to either buy credits, or wait until the next island is released.
Many users have finished all the islands. It is not a competition.
You can get 50 poptropica credits by solving the mysteries on one of the islands. And if you want more credits. then solve all the cases on all the islands!
Just beat all of the islands
lose in all islands.
You can not fly on all the islands only some. (see related question)