Board Thread:Geometry Dash Update Discussion/@comment-26317392-20151112094652/@comment-26704069-20151115000445

I think that robtop said insane (I'm not totally sure), it would follow the pattern for all of the later updates:

1 level = insane

2 levels = harder & demon

RobTop confirmed that there will only be 1 level in update 2.1, therefore we can expect the new level to be insane. However, I could be completely incorrect.