It looks like the second wave of Xbox 360’s is going to hit North America. Around 300,000 are scheduled to hit, and Best Buy in the US will have them out on the floors on December 18th. In Canada Best Buy will have them around for the 16th with a minimum of around 30 per store.
Again in Canada the store will open an hour earlier (at 9am) for the release, but if it is anything like last time, you might want to get there around 7:00 am as they may institute a ticket system if there are already people waiting to grab the console.
Best of luck to anyone that goes out to grab one. I was lucky enough to get mine last week.