Unfortunately, no: The last converter-box coupons were re-issued on July 31, and the last possible expiration date is Nov. 9. We have links to however many converter-box auctions are under way at any given time here. Saw some pretty decent prices during a quick look.
Don't wait for long: Given the number of online merchants listing boxes as discontinued or back-ordered, many manufacturers have apparently cut way back on production, or stopped making them entirely. Prices don't generally fall on merchandise that's becoming progressively harder to locate... :bolt: