DockHide is a new tweak published this evening in Cydia that allows iDevice owners to hide the iOS dock without much effort. DockHide works with the help of the Activator plugin and from the iOS settings menu you will have to choose a gesture to be taken to hide the dock. When the dock is hidden all Springboard applications will be rearranged to be displayed on the whole screen but I think it was much more useful to add a fifth row of applications on each page than to rearrange them to be displayed on the whole screen.
DockHide is available for free in the ModMyi repo.
