Pathfinder Advanced Class Guide Pocket Edition - Rules of Play says:
Adventure like never before with the Pathfinder Roleplaying Game Advanced Class Guide! Explore new heights of heroism with 10 new base classes, each with 20 levels of amazing abilities. Incredible powers also await existing characters, with more than a hundred new archetypes and class options. Prepare characters for their most legendary adventure ever with massive selections of never-before-seen spells, magic items, and more!