In case you missed it, R. L. Stine confirmed a new series titled "Goosebumps SlappyWorld". Here's an image for those who don't want to click the link.
I find it odd that he randomly announced in a reply to someone that he's making a new Goosebumps book series. And I find it odd how Scholastic hasn't said anything about it either. Could it be that Stine is just joking around? Only time will tell, I guess.
Also, the title... "SlappyWorld." Interesting.
UPDATE: It looks like Stine revealed the name of the first book in the SlappyWorld series on Twitter: Slappy Birthday to You!