For fiction, I'm finishing up a re-read of Patricia McKillip's Riddle-Master trilogy, one of my all-time favorites. After that, I have too many to list, but am thinking of diving into John Crowley, Clark Ashton Smith (especially Zothique), and a bunch of others.
For non-fiction, I am reading Jamie Williamson's The Evolution of Modern Fantasy, an excellent discussion of the roots of modern fantasy, particularly as it pertains to the canonical Ballantine Adult Fantasy classics published in 1969-74.
For rpgs, I've cashed in a bunch of store credit from Noble Knight, so have a ton of new books that I'm browing through, including stuff from Symbaroum, the Forbidden Lands, the Eris Gazetteer, the Megadungeon zine, and a few mega-dungeons (including Rappan Athuk).