3/12 UPDATE:
RHP Gray Fenter (selected by the Cubs in last December's MLB Rule 5 Draft) has been re-claimed by the Baltimore Orioles, RHP Cory Abbott, RHP Tyson Miller, and RHP Kohl Stewart have been optioned to AAA Iowa, and RHP Manuel Rodriguez, C Miguel Amaya, and INF Christopher Morel have been optioned to AA Tennessee.
In addition, 16 Spring Training NRI (INF Abiatal Avelino, RHP James Bourque, OF Brennen Davis, RHP Juan Gamez, C Taylor Gushue, RHP Jake Jewell, LHP Brendon Little, RHP Tommy Nance, C Tyler Payne, 1B-OF Alfonso Rivas, RHP Michael Rucker, RHP Robert Stock, INF Chase Strumpf, LHP Jerry Vasto, INF Andy Weber, and INF 1B-OF Patrick Wisdom) have been assigned to Minor League Camp.