While a lot of attention has been poured on Starfinder lately, and deservedly, it's big sister still has a lot of life left in it. Here is my wishlist of 10 books I'd like to see Paizo announce for the Pathfinder RPG:
Advanced Character Guide - the next phase of background and archetype options
Bestiary 7 - natch (and don't stop there...)
Challenge Codex - puzzles, traps, skill challenges
Chronicles of the Righteous - the ying to the Book of the Damned's yang
Darklands Adventures - so much left to be explored
Legendary Adventures - blow open new fantasy worlds and scenarios that Golarion doesn't explore (was going to call this "Ultimate Fantasy," but think of the Google results - oh my!)
Nemesis Codex - boss battles and their minions! (an ancient dragon, a vampire lord, etc.)
Ultimate Arcana - alternate magic systems and guidelines for no-magic and low-magic campaigns
Ultimate Conflict - alternate combat systems and new ways to battle
Ultimate Technology - steam punk, diesel punk and more, plus Pathfinder versions of the Solarian, Technomancer, etc.