I think it's only on the sale items already listed. AKA go to the sale section, where stuff is listed at -40%, then subtract another 20%. I think they just want to get rid of seasonal stuff.
For Boston people there's a ton of good stuff in store too. Picked up a Geller Glasgow coat & w+h service boots (last of each of these unfortunately). Had to hold back after that, but there's a ton of good older season w+h, Geller, APC, NdG, etc left.