[ame=http://www.youtube.com/watch?v=WXhTQxyMebU]YouTube - Panoramic / Scrolling Wallpapers On iPhone and iPod Touch Parallax - iOS Vlog 184[/ame]
Parallax is a homescreen enhancing tweak that allows you to have panoramic wallpapers that scrolls when you scroll through pages. Setting a wallpaper is as easy as setting the wallpaper in your settings or Photos app. Nothing changes, except your wallpapers extend throughout your device. This tweak is recommended for 4th gen devices. Find it on Cydia under Parallax for $1.49.