In July it got rejected by Apple, so we decided to focus on some other projects (Adrenaline Pool, Ace Tennis etc.). But then it suddenly got approved, and some of us (including me) were in holidays and the servers were of course not ready. We didn't had any other choice than to withdraw the game. We have however updated the online servers a few days later so that the maps were playable.
We still plan to re-release Graal Zone on iPhone, cannot guarantee yet when that will happen (should be a few weeks or months). The client is much faster now and we got more experience with the network stack on the iPhone. It's still some work to setup and maintain a MMO though.