I'm doing it too! I love Angela and have learned so much from her already.
The announcement came out today but the challenge actually starts on Oct. 28. I think she announced early so people could order her panel and thread kit in plenty of time, if they wanted them. Those are expensive so I'm using my own stuff. I do believe in supporting her, tho, and own just about all of her books!
If you don't want to wait for the new challenge videos, you can brush up with her older videos on YouTube. They are all good.