Blogdoiphone claims to have obtained a leaked pre-GM version of iOS 5.1 which has a new slide-to-camera shortcut on the lockscreen.
Currently, to open the Camera application without having to unlock your phone, you must double-tap the Home button to display the button for the camera (see details of this in our book Secrets of iOS 5 ). This is impractical and yet many people do not notice that this functionality exists.
Fortunately iOS 5.1 Apple will change this, leaving a permanently active camera icon on the screen locked. To take a picture, just slide your finger up the icon, making the camera screen appears.
The site was also able to confirm Siri support for Japanese as previously rumored.
Its thought that Apple could release iOS 5.1 around March 9th.