Siemens CT66 / C66 / C65 / C71 / C70
It's important for every manufacturer and every carrier to offer a range of phones at different price points. The CX65/66 is a much higher-end phone. It has a huge display, more memory, VGA camera, video recording, etc.
This one - the C65/66 - is an entry-level phone. The point is to offer a really affordable camera phone, which is why it's only CIF resolution and a smaller display. This may replace the C61 for some carriers - this could be the first camera phone to be given away as a "free" phone on a regular basis.