Do you know where one could read on "Modular Forms, K-theory and Knots"? The combination of themes sounds thrilling!

Edit: Zagier's paper on "quantum modular forms" will be published in Clay's volume dedicated to Connes anniversary.

Edit: Copies of the fascinating article circulate in the web. If asked by email, I would help finding it.

Edit: a survey + lecture notes by Ken Ono on harmonic Maass forms.