Albeit that the Richmond Hill Official Plan Update is in progress changes are being made via amendments such as the one below coming forward to Council on May 13th regarding the Yonge/Bernard KDA.
These type of Official Plan and Zoning amendments will "predetermine the vision" of Richmond Hill without the public consultations that would normally be part of the Official Plan Update process. 
"It would be much more ideal for Council to stick with the 2017 KDA Plan and then complete an Official Plan update to ensure that the Official Plan and KDA Plan are consistent and that they will fit the immediate community and also wider community as a whole. We have that opportunity now - we should take it." - Councillor David West
There are currently over 175 applications on file with the City requesting Official Plan and/or Zoning amendments. The Official Plan Update is expected to be completed by the end of 2022.