From my understanding, that is NOT true. As far as I know, the U of M (under the "leadership" of outgoing president Mary Sue Coleman) has not tweaked its undergrad admissions policy to bring it into conformity with the SCOTUS decision in Gratz v. Bollinger and Prop 2.
BTW, Jennifer Gratz never entered the U of M, but went to college somewhere else. I'm pretty sure that this Kimbrough girl, instead of making a big stink about U of M's rejection, can get admitted to MSU, Eastern Michigan, Western Michigan, or Central Michigan.
The voters threw out affirmative action and the university flouted the law anyway.
With a 23? I doubt it these days.