TFTNT!
--- We will find out about the book and who wrote it.
I bet this one will be featured in Henry Jr.'s backstory.
--- There are “major plans” for Cora this season (possible 3-episode arc)
This is definitely about the original story of Rumple and the Miller's Daugher -- which must be Cora!
--- We'll learn Charming's real name.
Not Mr. Gold's first name? Seriously? Why is Charming's real name so important?