Linkzmax on 25 October 2007
http://www.nintendoworldreport.com/newsArt.cfm?artid=14404
"The amount of Wii hardware that will be in North American stores will be unprecedented. Substantially more than the launch, substantially more that has been seen to date,"
As far as doubling I could only find http://gonintendo.com/?p=27050 and the source doesn't mention anything about it.
