OctaBee is bigger and stronger version of HexaBee. It has 8 motors and it’s designed to carry heavier payloads (up to 15kg). It was made to carry heavy recording cameras with stabilization or heavy lifting aerial operations. There was 3 versions made with the biggest of 35kg payload capability & foldable design.
More about Octabee (Slovene): http://forum.modelarji.com/viewtopic.php?f=135&t=84639