UPDATE - latest Canon 1D Mark IV specs:
- 16 Mpix
- Dual DIGIC
- Native sensitivity of ISO 25.600
- Boost to ISO 102.400
- 12fps
- 1080p @ 24/25, 30 & 60 fps
There will be a Canon event in Australia On October 20th. The main theme is the 50th anniversary of Canon SLR. Of course a new 1D Mark 4 camera with very high ISO is expected. This sounds like a logical response to Nikon's D3s 102400 ISO that was released few days ago (see low-light D3s video here).