On February 17th, Minister of Municipal Affairs and Housing Steve Clark announced the launch of a 60 Day consultations on Growing the Greenbelt. 

Act: Greenbelt Act, 2005
Ministry:  Ministry of Municipal Affairs and Housing
Comment Period:  February 17, 2021 - April 19, 2021
Further details and to comment: https://ero.ontario.ca/notice/019-3136 

The Ministry of Municipal Affairs and Housing is seeking feedback on ways to grow the size and further enhance the quality of the Greenbelt, with a priority of:

1. Study area of lands focussed on the Paris Galt Moraine, which is home to critical groundwater resources
2. Ideas for adding, expanding and further protecting Urban River Valleys and increasing the Greenbelt's footprint into high density urban areas including the areas around the Don River in Toronto and land around Duffins Creek in Ajax and Pickering.

During the Minister's press conference, a journalist referenced a news release from Environmental Defence. The release and the report are available : https://environmentaldefence.ca/2021/02/17/over-90-groups-and-prominent-individuals-offer-a-new-blueprint-for-expanding-ontarios-greenbelt/

Ontario News Release