Infiniboard, the vertical icon scrolling jailbreak tweak by the developer of the popular iPhone tweaks like ProSwitcher and Infinidock for jailbreak community, has been released to the Cydia store for jailbroken iPhone and iPod Touch.
Infiniboard let you vertically scroll your home screen pages. Using Infiniboard you can add as many icons as you want on each page, and access them through a flick up and down. Overboard, the expose for iPhone, support coming soon with a new Overboard update.
You can Purchase Infiniboard from the Cydia store for $1.99. Your iPhone/iTouch must be jailbroken. (Guides linked below)
Checkout the Infiniboard screenshots and video posted below: