Also - North Stand
Stated in Aug 2018 - North Stand Members who purchase a membership (seated or standing) will receive 1st level priority in new North Stand in 2019 or can remain in the Carnegie Stand seats.
After this priority period, (date unknown) other Rhinos 2018 Season Members will have 2nd level priority before they go on general sale.
There is nothing about North Stand Memberships having 1st option in the new South Stand !