Canon announced last month that they would update the firmware in the 7D camera. The list of new specs was pretty exciting.
The increase in burstrate is the most outstanding new feature for me. From 15 to 25! Thats a lot of action you can shoot!
Here's the complete list;
Improved maximum burst for RAW images (up to 25)
In-camera RAW image editing
In-camera Image Rating
In-camera JPEG resizing
Maximum Auto ISO setting (ISO 400-6400)
Manual audio level adjustment in movie recording
File name customisation
Time zone settings
Faster scrolling of magnified images
Quick control screen during playback
I did the update thru the EOS utility program. Very easy to do, with the given instructions.
As said, my favorite new features are the burstrate improvement and the max. auto ISO. I like to keep the ISO as low as possible, this is gonna help lots.
If you have a 7D, i highly recommend the firmware update. It basicly gives you a new camera. (i know that isnt true, but for arguments sake...)
You can find all about it here.