Pogo had added the Unique Lenticular island that includes 15 new levels to Bejeweled Stars today.
he game now goes up to 690 levels. You can earn 1 new badge in this update.
https://www.pogo.com/games/bejeweled-stars
tyvm
Are the levels above 600 just as difficult as the events?
You're talking to the wrong person. I haven't played that high a level. I don't really enjoy their in-game events - I never complete them myself.
I'm curious, because the events seem quite difficult and maybe they really aren't compared to the higher levels in this game.