What do you get? RAW, live histogram, bracketing and a lot more! Makes me want to get one of these cameras just for the heck of it. It's not a direct hack on the firmware but it's something that gets activated after bootup, so it's almost risk free by the sounds of it and there's new features being added on a regular basis from what I've read.

Exact models that supports this:

A610, Fw: 1.00D, 1.00E, 1.00F
A620, Fw: 1.00F ( 1.00E is not compatible. You must upgrade to 1.00F first )
A630, Fw: 1.00C
A640, Fw: 1.00B
A710 IS, Fw: 1.00A
S2 IS, Fw: 1.00E, 1.00F, 1.00G (temp. note: added on 20-May-2007. May not be bug-free yet.)
S3 IS, Fw: 1.00A

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