I can now confirm a new book coming out some time around Fall of next year! Here's the description from Publisher's Marketplace:
Adam Selzer's TANGLED UP IN BLUE, a John Hughes-esque romantic comedy about a teen whose unrequited girl-crush leads her to embark on a "holy quest" with a pair of misfits who have invented their own religion.
This is the project that's variously been known as "the top secret YA project" and "Debbie Does Detention" over the years. It'll be published by Flux, Llewellyn's YA branch. It's a bit edgier than most of my other YA has been, and contains many more references to Full House.
Here's me with Dave "Joey Gladstone" Coulier in 2002: