I've just found that article about noncommutative model unifying GR & QM. http://arxiv.org/abs/gr-qc/0504014 A few quotes: Noncommutative geometry plays an increasingly important role in the present search for quantum gravity. It has also recently been recognized that it is a useful tool in superstring theory. In a series of papers, we have proposed our own approach to the unification of general relativity and quantum mechanics based on noncommutative geometry. We show that the generalized Einstein equation of the model has the form of the eigenvalue equation for the generalized Ricci operator, and all relevant operators in the quantum sector of the model are random operators; we study their dynamics. We also show that the model correctly reproduces general relativity and the usual quantum mechanics.