Canon's new SD550, SD450, and SD30 cameras

Canon's going all out today, also releasing revisions to their popular
SD500 and SD400 series cameras, as well as a slightly bumping their SD20 line. The new SD550 and SD450 kick it up to 7.1 and 5.0 megapixels, but also up that screen size a half inch to 2.5-inches. The SD30 devices won't see much of a boon in specs, but they will feature the DIGIC II image processor, a larger 1.8-inch screen, as well as a dock option. Expect these to drop in September for $500, $400, and $400, respectively.