Hexagon Force
Hexagon Force is the upcoming level on the 1.8 Update, the name comes out by a twitter post of RobTop where it says in an image "water+flame+hexagon", means that the new song of the new level is Waterflame- Hexagon Force.
This new level will introduce the new portal.
Finally, here is the sneak peek for Hexagon Force : https://www.youtube.com/watch?v=oil_U1qIxQU.
This is an upcoming feature.Informations are from RobTop's official twitter.