This is where I first saw the combo:
http://www.connectingthreads.com/fab...it_KD2056.html
Then not long after I saw this:
http://quilting.about.com/b/2009/06/...-pinwheels.htm
The swap would most likely have a mail by date of October 31st and be a 12.5" unfinished block pattern of your choice.