Newt’s Patronus A Big Spoiler

In reply to a fan question on Twitter, J.K Rowling has let us know that the form Newt’s patronus takes is a large spoiler for future films:

 

Does this mean Newt has to go up against some Dementors? Or perhaps he uses it as a shield against an Obscurus? Or, perhaps we finally get to see the Lethifold that was cut from the first movie:

[…] the Patronus is the only spell known to repel the Lethifold.

 

J.K also took the opportunity to let us know she is still working on re-writes for the second film which begins filming later this Summer: