The date and time has been set for the national EAS test from the White House, which will be November 9 at 2PM ET / 11AM PT. This was announced back in June, but I did not find out about it until reading about in in this morning's Bright House ad in the paper:
http://www.fema.gov/news/newsrelease.fema?id=55722
http://www.fema.gov/news/newsrelease.fema?id=55722