A Whole List Here. Go Grab it, and feedback your experience here

http://www.canon.co.jp/Imaging/BeBit-e.html

Firmware updates
- Adds Direct Print for Canon CP-100
- Adds Direct Print for compatible Canon BJ printers
- Adds Index Print for DPOF and Direct Print
- Adds On/Off power saving while connected to computer
- Adds EXIF 2.2 support
- Adds exposure compensation in movie mode
- Fixes CF write errors in high speed continuous shooting mode
- Other PowerShot G2 additions / fixes:
+Fixes over/under-exposure in high speed continuous shooting mode
+Improvements of charging when battery pack is over-discharged