The HF10/HF100 is an AVCHD camcorder (saves footage to a SD card in AVCHD format, compared to the HV20 and HV30 which save to mini DV tapes in HDV format)
HF10 owners whose serial numbers have a zero in the 7th digit can download a fir,ware update by entering their serial number at Canon's Japanese site.
For the firmware analysis details, see HF10/100 Firmware Analysis.