Lenovo on Tuesday announced multiple thinner and lighter additions to their ThinkPad portfolio. The ThinkPad T440s, T440 and the X240 Ultrabooks all feature 20 percent thinner form factors, all-day battery life, a variety of panel options and up to 45 percent larger trackpads to take advantage of Windows 8 gestures.

Specifically, Lenovo's new Ultrabook ThinkPads can achieve up to 17 hours of battery life thanks largely in part to Intel's fourth generation Core processors. In the event that isn't enough, Power Bridge technology allows you to swap external batteries without powering down the machine.

The ThinkPad T series is described as the mainstay of Lenovo's business portfolio with the T440s and T440 carrying on that legacy. Both models measure in at just 21mm thin and offer up to 1TB of local storage or solid state drives as well as the latest generation Wi-Fi and optional 4G WWAN technology.

The T440s is available with a full HD touch-enabled display while the T440 can be had with an optional 14-inch HD+ touch panel. The latter also can also include an optional integrated smart card reader should security be of high concern. The ThinkPad T440s will be available starting at the end of October priced from $1,149 while the ThinkPad T440 is also launching at the end of next month starting at $899.

Elsewhere, the Lenovo X240 - a follow-up to the X220 we previously reviewed - weighs less than three pounds and is just 20.3mm thin. Like the other two machines, it also ships with up to a fourth generation Intel Core i7 processor, 1TB of storage, a 12.5-inch Full HD display option with touch and a backlit keyboard. Pricing here starts at $1,099 and should be available by the end of October in time for the holiday buying season.