To answer your question, there are changes for degree requirements actively before the provincial government at this time, though, the NSRP continues to support the position of the Association of Provincial Psychology Regulatory Organizations (ACPRO) which recognizes the doctoral degree as the standard of entry to the profession.
https://acpro-aocrp.ca/wp-content/uploads/2020/03/ACPRO-Position-Statement-National-Standard-November-2014.pdf
If there ever were a change in degree requirements in Nova Scotia, anyone enrolled in a master’s psychology program that was acceptable to the NSRP at the time of any change would certainly be grandfathered for registration later. As well, the NSRP would provide an additional grandfathering timeframe, but, as mentioned, there is nothing currently before Government. Any change to educational requirements would have to be approved by Government.