Remember sidebar in installer 1.x.x. Well now its coming to 2.0 as well via Cydia. Sidebar is going to be available in Cydia at the end of the year. The basic functions that its gonna perform are :-
Note: The above screenshot is of the earlier version and its not available on the locked screen.
There are going to be 2 versions launched. One is more like Vista and the other is more like Apple .
The iPhone Help
The iPhone Help