Building on the XH A1 and XH G1 High Definition (HD) camcorders, Canon has introduced today the newly refined and upgraded hand-held XH A1S and XH G1S HD camcorders.
Both products incorporate enhanced features for improved operation, including greater image control and improved audio capabilities. Whether it is for corporate video production, wedding and events, or filmmaking, the new Canon XH A1S and XH G1S HD camcorders help professional videographers realize their creative vision. The new Canon XH A1S and XH G1S HD camcorders are scheduled to be available in late December for an estimated retail price of $3,999 and $6,999, respectively.
More details on the Canon site.

For "normal" video camcorder users check out the Canon VIXA HF11 HD Camcorder, way more affordable.