I'm confusing myself, now, WT!
My link above is (obviously) from Tesco's own website and quite clearly refers to what will happen from 6th December. So, based upon that, I'm confident that my web link is up-to-date and correct. (i.e. it makes it clear that the main 'double points' promotion will continue after tomorrow). However that appears to be in conflict with this!
http://www.tesco.com/...bcard/bigexchange.asp
Given, though, that my original link shows a definite date I'm still (reasonably!) confident that the 'double points' promotion will be available next week.
The '4x' and '3x' references are to 'Clubcard Rewards', for such things as cinema tickets, hotel breaks, magazine subscriptions, etc. (See the list down the left of this page:
http://www.tesco.com/clubcard/deals/ )
Chris