Well, just finished all the books that are out, and I have to say that I really have been enjoying this series... I might dare to say that is the series I've found most enjoyable from what I've read... although it hasn't been much (probably followed by Shadows of the Apt).

If you like this series, I'm going to recommend Child of Fire, which I also just finished reading, by a new author called Harry Connolly... it's the first of a series called Twenty Palaces:
http://www.bookdepository.com/book/9.../Child-of-Fire

Anyways, the next book for Dresden is called Changes and it should come out next April. Can't wait.