Before the update to GB, whenever I took a picture there was a shutter release sound. I never found a way to turn it off so just got used to it. Even when I turned off the system sounds, with Froyo the camera still clicked.
Now with GB the shutter sound is off when Settings>Volume>System volume is off. So this is one function GB changed. I wish sounds like this could be controlled separately. I turn off the system sounds so I don't have to listen to the power on and off noise but I got accustomed to having the shutter sound when I took a photo. With the picture taking delay, it was how I knew the camera had fired. I guess I'll get used to it though.