Hi All, For those that are interested and/or have been waiting for the canon weight system to come out....mine arrived today! This is the weight system that will make the underwater housing neutrally bouyant. It's item number WW-DC1 and I believe it works on most canon underwater housings. I have the WP-DC800 housing. It comes with 4 weights and depending on which model of housing you have determines how many of the weights you use. I believe I paid 30.00 plus shipping/tax. I called Canon direct to purchase it since none of the websites seem to have them in stock. The number I called was 1-800-385-2155. I think I got transferred a couple of times before I got the right department.