User blog comment:DamiedeterJR/Netflix Season 5 Winner/@comment-4742462-20141214174457/@comment-4749365-20141216095312

In terms of in-universe, it's two separate seasons. But, in the real world, it's technically two parts of one season ordered by Cartoon Network/Teletoon (I don't know who orders it). I'm pretty sure Fresh TV called it season six on their announcement blog, but it's technical reasons only. Us fans and the characters know it's a sixth season.