I'm trying to decide whether I'm more excited about the next Bourne movie opening in a week or so, or about the second book of Daniel Abraham's The Long Price Quartet coming out in September. I recently read A Shadow in Summer (I was trying to wait until the whole set came out, but the reviews were too good and I've been waiting for 8 years since reading a short story that became part of this book), and it was a stay-up-all-nighter for me. (Which, incidentally, the Harry Potter books haven't been.) It's a wonderful, imaginative fantasy. A Betrayal in Winter will be out in September, and for those of you near Albuquerque, he'll be doing a signing at a Barnes and Noble on September 8.
His web site is here: danielabraham.com/, and you can actually read the first couple of chapters of Winter here.
Full disclosure: I know Daniel and attended the Clarion West workshop with him. That's probably the only reason that I know about his work, but he's been doing very well, selling in good markets, has already won an award for one of his short stories. And, dammit, it's a great book! FWIW, George R.R. Martin likes his stuff, too. :-)