As much as I don't like to disappoint you, JK Rowling's official site says the following:"J.K. Rowling is to publish a new novel for adults. Further details will be announced later in the year."
And with a scribly-font in the bottom right corner of that said site there is a statement that Rowling shared:"Although I've enjoyed writing it just as much, my next novel will be very different from the Harry Potter series."
So sadly, at least for the time being, we aren't getting more HP-related material. But at least we are getting more stuff written by Rowling so all is well in the world. *nods*