I have a hypothesis Did I solve that JK Rowling riddle?

JK Rowling tweeted a teaser stating: "Cry Foe! Run amok! Fa Awry"

 This was a cryptic post following that where she states she was working on a novel. 

My solution:

"Cry For One More Book For Harry"

Read it fast. Like that board game (Mad Gab?) where you read the cards with strange sentences and listen to how they sound like other phrases. 

Yes. :) it may be late and I may be exhausted but here is hoping :)