Looks like registrations have been allocated for the first 2 A350-900s.
https://www.ch-aviation.com/portal/n...ines-a350-900s
According to a Department of Transport filing on August 30, SAA will add ZS-SDC (msn 226) and ZS-SDD (msn 245) which are currently in service for Hainan Airlines (HU, Haikou) as B-304Z and B-305A respectively.