German Toy Site spielwaren-bludau.de has revealed images of the upcoming LEGO Mixels Series 4 sets. The new series will be available for sale beginning February 2015. Thanks to Brickset for the news.
Green Mixels
41527 Rokit
41528 Niksput
41529 Nurp-Naut
Red-Orange Mixels
41530 Meltus
41531 Flamzer
41532 Burnard
Blue Mixels
41533 Globert
41534 Vampos
41535 Boogly