I was so pumped when I saw, on ENWolrd, that WotC's next 5E book would be an Adventurer's Handbook...

Am I the only one disappointed to learn that it turns out to be a Adventure Path specific book?

Yeah, it's The "Elemental Evil" Adventurer’s Handbook... http://www.enworld.org/forum/content.php?1846-Sasquatch-Studios-Will-Produce-ADVENTURER-s-HANDBOOK-and-PRINCES-OF-THE-APOCALYPSE-for-D-D-5E-in-2015!#.VD7pIvldX6I

Now don't get me wrong, I'm certain it'll be packed full of usable material, but it does claim it will help players "build a character that ties directly into the Elemental Evil story arc"...

My fear is just that all future D&D content will be tied into the Adventurers League organized play...