This year, however, only the recipients of the email offer are eligible for the double elite qualifying miles on December. You can access the Qatar’s web page of this announcement here.
You should check if you have received the invitation. If not, it is unlikely that you would have been targeted to this offer.
Here are the terms and conditions of this offer:
The double Qpoints offer is valid only for Privilege Club Main Members who receive this communication and not for Family Members. To be eligible for the double Qpoints, travel dates must be from 1st December till 31st December 2012. Privilege Club Members may avail of this offer more than once during the offer period. The total Qpoints earned will be double the Qpoints shown in the list. Please ensure to quote your Privilege Club membership number at the time of booking or check-in. Please note, as per Privilege Club Terms and Conditions, Qpoints can’t be earned on codeshare flights, award tickets and Qmiles plus cash tickets.