As of June 1, 2016, briefs filed with the Miss. S. Ct will have to include a Statement of Assignment in accordance with MRAP 28(a)(4).
( 4) Statement of Assignment. This statement must succinctly give the reasons, if any, that the Supreme Court either must or should retain the case for the reasons stated under Rule 16(b) or (d). The statement should include citations to any cases sought to be overruled or perceived to be in conflict.
See the revised MRAP 28 here.