J.K. Rowling makes new post on Twitter!

 Just only 12 hours ago, Harry Potter author J.K. Rowling
 has updated her Twitter status with this following "tweet."
"Pen and paper are still my priority over tweeting. 
You can follow @pottermore to see what’s going on there."
This is the first time J.K. Rowling has tweeted
a message on her Twitter account for over 7 months.

Since Pottermore has already been created, and is close to being released online,
what could be J.K. Rowling's newest, secret pen-and-paper project?

If J.K. Rowling is working on something Harry Potter related, she's not saying.
She did say, however, that she was in the early process of writing something else,
something that does not involve Harry Potter in the slightest. Could this be it?