Along with the just-introduced ThinkPad Edge E431 and E531, the Helix sports a new trackpad that forgoes the secondary buttons meant to be used with the TrackPoint.
ENGADGET
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As for Lenovo, the tablet threatens to disrupt several of the ThinkPad's characteristics such as its TrackPoint and keyboard (as well as the software library advantages it enjoys supporting Windows).
ENGADGET: Switched On: The watch and the workhorse
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Aside from its pedigree of simply being a ThinkPad (I will forever prefer that red TrackPoint to any other pointing device, and their keyboards are exceptional), it improves on the Yoga by boasting a detachable keyboard dock.
FORBES: Best Of CES: Is Lenovo's ThinkPad Helix The Perfect Ultrabook/Tablet Hybrid?