The interior-point optimizer may dualize the problem before optimizing a linear problem. The heuristic that decides when to dualize has been changed a bit.
A number of bugs has been fixed in the mixed integer optimizer.
Fixed problem in the dual simplex optimizer that made it report of space when it was not.
Fixed a problem that occured when the -min or the -max command line option is used the MOSEK command line tool.
Fixed a bug that caused the problem status not to be reported correctly for the basic solution. This occurs only for dual infeasible problems when the presolve is turned off.