These are the must read websites and newsletters if you want to keep updated on Ontario's Heritage current events and heritage events:
Ontario Heritage Connection - This website is funded by the Ontario Trillium Foundation. It posts news releases on the latest heritage events and projects.
Built Heritage News - This newsletter is put together by past ACO President, and architect Catherine Nasmith. Events, news articles, action items and commentary are submitted by heritage professionals, advocates and volunteers from all over Canada.
Architectural Conservancy of Ontario Blog and Newsletter - The blog and newsletter and manged by President of the ACO Lloyd Alter. They feature commentary on current events, ways to get involved and links to interesting articles.