As part of a sweeping 2025 plan, the University of Minnesota has approved a free-tuition program for some students.   Last week, the Board of Regents voted to authorize an initiative called MPACT 2025, a “systemwide strategic plan.” One of the associated measures provides free tuition for students whose families make 50-thousand dollars or less in income. It will be implemented in addition to existing tuition assistance programs, with officials hoping to start it for undergraduates by the fall of this year.