Well I was going to post the news, but you guys beat me too it. Better hurry before they catch it. Last time they caught it and corrected it, but they still honored all orders placed that had the discount reflected on the website. I got my Ultralite at 20% when they did the same thing over the Memorial Day sale.
FYI, the Summerlite is showing up as $242.25 for all sizes, including the 6'6" which normally retails for $315, so that's actually just about a 23% discount. Grab it quick and they should honor it.