I wouldn't mind seeing what classic tracks he'll re-use.
That's one of my favorite parts of a Tarantino movie. The way he uses songs from the 70's, or sometimes he just gets something nobody's ever heard of; he always finds a way to make it fit, perfectly.
I'm sure he'll have an original score, of some type, but I would expect it to be for only one or two songs. Out of curiosity, I IMDB'd his last few films; in "Death Proof", only the opening titles were scored.
By the way, Nick, I thought it was funny how you and I used the exact same point, but one of us used it as a negative, and the other as a positive. No matter which genre, a Tarantino movie is, first and foremost, a Tarantino movie, and I think that's great. Cheers!