Balaton Model (http://www.balatonmodellshop.co.uk/spl/455012/Aircrafts-1-72) is to release in 2016 a 1/72nd Savoia-Marchetti SM.75 Marsupiale resin kit - ref.BM72064
Source: https://www.facebook.com/media/set/?set=a.1546742502278281.1073741881.1463629373922928&type=3
V.P.