Family Tree DNA have announced an upgrade promotion (not for new kits).
Emails are being sent to eligible participants with instructions on how to claim the discounted upgrade prices (reputed to be an average of 25% off the normal cost).
Note the instructions in the email:
To order this special offer log into your personal page and click on the special offers link on the left hand navigation bar.
As an indication, normal upgrade prices are in the vicinity of $US 49 for each of 12 to 25, 25 to 37 markers, and $US 99 for 37 to 67 markers.
So, if you want to see how your results might match at a higher level, get in while this lasts (only for the week from May 14th through May 23nd).