Is there a release date for 6th island?

Can you please elp me by explaining why I don't have 3rd island opened if both previous are opened, finished and no space left..

That doesn't sound right. You should be able to travel to a 3rd island through the map. Make sure you have the latest update, and if that doesn't help, contact customer support through the "help" button in the game settings and provide your user ID number for them to investigate.

You still need a certsol amount of stars. Were you buying resources and playing fast?

Here it is end of August…..when is date for it to finally come?

The date has still not been set, but it coming soon. You can see the island forming on the SE corner of the map. And I'm told t it will be bigger than the last 4 islands combined!

You can see an island forming in the SW corner as well... More space there, as well.