There are heavy indications that we will get new levels every other week or so. As announced at the official Bubble Witch Fan Page, that is King.Com’s master plan. Sometimes maybe even once a week! Usually Thursdays are Feature Days for Bubble Witch Saga, that is great, then all we Wannabe Witches have the whole weekend to find out about new features and master new levels! :D
You get the possibility to unlock the Eternal Isles after completing level 155. You need 3 friends or 12 FB coins to unlock the spell that keep it unleashed.