Someone had asked about this earlier in the month in the rules thread. Thought I would update in a dedicated thread.
The location for the 2018 CAC is now officially up in the air. The air field that is located north of London Ontario was the potential location, the board for the airport (which is owned and based in China) denied the proposal to host the event there after the local management had already agreed to hosting. This has been conveyed to ASN and it is being discussed currently I believe. Unfortunately the only other venue suitable in Ontario is the Picton Airfield, near Belleville, which is also for sale and unable to host. There is a real lack of large quality venues in Ontario currently.
Hopefully another venue can be secured quickly because it is getting late in the year to get this scheduled. I am sure more will be heard on this in the near future. It seems unlikely that it will stay in Ontario, but another club will need to step up.