Update (7 Aug 2012): Canon has just released firmware 2.0.0 (click here for official site)
It is always a good idea to keep your camera’s firmware updated. In Sony’s NEX series, for example, updates resulted in major usability improvements. For the Nikon D800/D4, updates fixed bugs that made it past quality control. No matter what brand you own, you win by getting the latest firmware.
Now Canon 7D owners really have reason to rejoice since firmware update 2.0.X adds a lot of performance and usability improvements to what is already a very good camera. It is almost like upgrading to an even better and more expensive camera, only it’s free!