Our friends at radioinsight.com have posted a rundown of the confirmed and expected format changes in Canada and the US.
Lance has a good post detailing all the changes and you can see them all here
As for confirmed changes in Canada, I have posted about Jack FM Smiths Falls here
Cat Country changes in Assiniboia here
Country 99 Winnipeg here
All of the confirmed changes are listed here with all the upcoming or expected changes as well.
Please check out the link above to get all your up to date information regarding the post Christmas changes.