Canon announced their latest 30D DLSR today. The camera is a mild update of the popular 20D camera, with one of the most notable features being a new large 2.5” LCD screen. This large screen is likely to appeal to underwater shooters enabling them to make a better evaluation of their shots while diving. That said the button positions on the back are different from the 20D meaning it will not fit into existing housings. And with few other specification advances over the 20D, I would not expect many housing manufacturers to be building new housings for this camera, especially because the 5D is proving such a popular camera with its FF sensor.