One new type has been introduced into the game. You may have heard of a lot, the Light-type. This new attribute brings the total number of types in Solar and Lunar to 18 different varieties. The details of the new type:
Strong Against: Dark, Ghost, and Fighting
Weak Against: Dark and Psychic
Resistant Against: Fighting, Ghost and Normal
No Effect: none
Comments and suggestions appreciated!
Also... the new types for the Solar and Lunar Beings have been confirmed. The Solar Being will be a Fire and Light-type combination, and the Lunar Being will be a Dark and Flying-type combination.