People tend not to like the default browser on their device. Especially BlackBerry and Windows Phone users. Opera Mini, at least, will stay a common mobile browser. Opera Mobile is also likely to stay high.
Opera Desktop will hopefully also do well, though it is unlikely. If they can do a little more advertising, they might get up perhaps a percent.
IE will continue down for a bit, until people start switching to Windows 8 and realize the potential in IE 10. Then it will start to go back up for a bit.
Firefox is on it’s way down, but may see some spikes among developers if they keep up the good work they are doing with their new 3D Web Inspector.
Safari is unlikely to increase much, however Safari Mobile will see an increase with each new iPhone/iTouch release as many decide to switch from an old phone or iPod, and a decrease from the many who decide to make the switch from iOS to Android.
Chrome will keep going up, as Google continues it’s advertising and people switch to Android. However, I feel many among at least the developers are deciding it’s not living up to it’s potential and jumping ship, either to IE9/10, or to Opera or some of the smaller browsers.
LONG LIVE OPERA!