User blog comment:CoinsCP/NO JOKE! Next special's short synopsis LEAKED!/@comment-33981152-20151121001405/@comment-3263817-20151202005041

Sorry for missing your comment, but here's my response: It's been confirmed by Timothy Barnes' resume that Mixels - as of Season 2, when he started working on the show - is simply going to be made in specials to coincide with LEGO's toy releases.

So yes, it's a special. And the series will continue as specials until proven otherwise.