In Lenovo's world, 'ThinkPad' means a business laptop, 'X1' means a premium ultraportable and 'Yoga' means a 360-degree rotating touch screen to enable laptop and tablet modes, and points in between. Lenovo is now on the fourth iteration of its ThinkPad X1 Yoga 2-in-1 convertible.
Lenovo ThinkPad X1 Yoga (4th Gen) review at ZDNet