If I had to hazard a guess, Teletoon, who produces the show with Fresh Entertainment, looks at getting a bigger audience with new eps with the fall season. From their perspective, they look at the number of people viewing it in Canada only....CN's ratings and such don't factor in this at all. I'm not crazy about the lengthy period between eps for this season as it blunts, I think, a lot of momentum for the show but I can understand...airing a new ep in mid July compared to Sept-Dec draws a big difference for ratings (Yes, I know they started Stoked recently but they've also committed to the series for 52 eps and there's no necessarily sequential plot to that show).
I'd like to see a new ep air this coming Sunday but it wouldn't surprise me if the next one isn't til September....