Canon have announced 10 new Powershot cameras, namely the Powershot SX1is, SX200is, D10, SD970is, SD960is, SD780is, SD1200is, A2100is, A1100is and A480. I won't go into details because the press release below contains most of the information on the new cameras. The SX series are the "do it all superzooms", the SD series are the compact Digtial Elphs and A series are Canon's lower cost but fully features models which user easy-to-find AA batteries.
Perhaps most noteworthy is the introduction of the Powershot SX1 IS to the US market. It was previously available only in areas outside the US. Canon will also release updated firmware for the Powershot SX1 IS which will allow it to record images in RAW mode as well as the usual JPEGs. The SX1 IS is similar to the SX10 IS (which is available in the US), but it has a CMOS sensor rather than a CCD sensor and it can record full 1920x1080 HD movies at 30fps (like the EOS 5D MkII). The SX1 also has an HDMI output. Both the SX1 and SX10 are 10MP cameras with a 20x optical zoom (28-560/2.8-5.7 equivalent).
Also interesting is the PowerShot D10, a 12MP camera with a 3x stabilized optical zoom. It's appeal is that it's very rugged. It can be used to a depth of 33ft underwater, it's "drop tested" for a 4ft drop and it's rated for use down to 14°F (-10°lC).