A new avatar of Milnor K-theory, for algebraically closed fields, appears in the guise of certain homology groups of orthogonal groups with twisted coefficients.
"Projective configurations, homology of orthogonal groups, and Milnor $K$-theory." Duke Math. J. 121 (2) 343 - 387, 1 February 2004. https://doi.org/10.1215/S0012-7094-04-12125-6