User blog comment:Zathronas/Analysis by an author: Volume 2 episode 6: Burning the Candle/@comment-10380701-20140905013658/@comment-10380701-20140905014342

Yep, you're right. I just did a quick skim of Monty's twitter.

The confirmation that I read was that Summer Rose is NOT Yang.... Which was right next to Blake not being Cinder's daughter.