Amazon has a new listing for "Equestria Girls 2" in hardcover book form. The author appears to be someone who works primarily on the Alvin and the Chipmunks series, with various literature guides and original scholastic books to accompany them. Equestria Girls in particular appears to clock in at 240 pages, but we have seen that swap around on Amazon listings before. With an April 14th release date, there is a good chance that this will change quite a bit. The only description available is:
"Another exciting chapter book for fans of My Little Pony Equestria Girls!"
Hopefully more details pop up soon! Find it's store page over here. Thanks to Ricky and Brony250 for the heads up.
Update: Also found at their official site.
Please let the second official pony movie target ponies instead of humans!