It looks like LEGO has extended its Double VIP Points promotion for North America. Originally, it was only suppose to run from October 1-4 as advertised on the October 2015 LEGO Store Calendar. However, the official website now has it listed as being valid from October 1-14 at LEGO Brand Stores and LEGO Shop at Home (USA | Canada). Thanks to forum member eagerbeaver for the news.
For those living in Europe, LEGO Brand Stores and LEGO Shop at Home UK/Europe will still run their Double VIP Points promotion in the later half of the month from October 14-31st, 2015.
*Shown below is the advert from the official LEGO Shop at Home North American site.