Very relevant pre-print ‘Discovery of a novel coronavirus associated with the recent pneumonia outbreak in humans and its potential bat origin’: https://www.biorxiv.org/content/10.1101/2020.01.22.914952v1. Zhou et al. report a closer bat betacoronavirus, RaTG13, that is similar to nCoV across the region CoVZC45 and CoVZXC21 are recombinant/not clustering with nCoV. Relatively high sequence identity in Spike reported too.