Lenovo has refreshed its popular ThinkPad X1 line with new internals and features. The core design of the X1 Carbon, X1 Yoga and X1 Tablet remains largely the same, but these updates keep the line competitive with other professional-oriented laptop and tablet options on the market.

The X1 Carbon is still one of the most portable 14-inch laptops on the market, and Lenovo has made the fifth-generation model slightly thinner (15.95mm) and lighter (1.12kg). The move from an Intel Skylake to Intel Kaby Lake CPU has resulted in an extra four hours of battery life; Lenovo now claims the Carbon is good for 15.5 hours of usage. Like previous units, the display is available in either 1080p or 1440p IPS LCD variants, and Lenovo has crammed these 14-inch panels into the area normally occupied by a 13-inch display.

Other improvements include the addition of two Thunderbolt 3 USB-C ports, and the ability to pack both WiGig and Qualcomm's X7 LTE modem in the one unit. An IR camera with support for Windows Hello facial recognition is included alongside a fingerprint reader for maximum security, and Lenovo's signature ThinkPad keyboard and trackpad are still as good as ever here. You can kit out the X1 Carbon with up to 1 TB of PCIe SSD storage and 16 GB of RAM.

The new X1 Carbon will be available in February starting at $1,349.

The X1 Yoga has received many of the X1 Carbon's upgrades: Intel Kaby Lake CPUs provide up to 16 hours of battery life (10.5 hours in the OLED model); there's two Thunderbolt 3 ports included; and both LTE and WiGig are found in the same model. Entry-level units pack a 14-inch 1080p IPS LCD, although an upgrade to the 1440p OLED brings 100% Adobe RGB coverage. This laptop is still very portable and features a 360-degree hinge, although it's slightly thicker and heavier than past models.

One of the key improvements here is the redesigned keyboard, which now retracts fully flat while the device is used in its tablet mode, improving comfort and longevity of the keys. In laptop mode, you'll still get a ThinkPad typing experience. The included ThinkPad Pen Pro stylus has been updated with a soft elastomer tip that creates a more natural writing experience when used on the display.

The X1 Yoga will also be available in February, starting at $1,499.

As for the X1 Tablet, the main improvement here is the inclusion of Kaby Lake CPUs. The rest of the tablet's specifications, including the 12-inch 2160 x 1440 display and the attachable keyboards with additional battery life, remain largely unchanged from the previous model. The X1 Tablet will be available in March starting at $949.