According to Nicholas, these could be the set names for the summer sets, and were referred to as the Mistika. We already know Gali, Tahu and Onua are coming back, s well as three new cannister villains, but some of these might pertain to the larger sets that we dont know much about yet.

Cannister sets: Tahu Nuva, Gali Nuva, Onua Nuva, Krika, Gorast, and Bitil.

Box sets: Vultraz, Takanuva, Rockoh T3, Jetrax T6, Axalara T9, and Mazeka.

Combiner set, Makuta Miserix