The Windows Hardware Certification Requirements changed on January 1, 2014. One of these changes was the removal of the requirement System.Client.Tablet.TabletPCRequiredComponents, which outlined the hardware that was needed for tablet PCs. Specifically, webcams and sensors are no longer required.
When you design tablet products without webcams and/or sensors, you will no longer see the product types Convertible Tablet or Tablet listed in the HCK when you’re testing. This is because product types are made up of a set of required features, and these product types require the webcam and sensor features.
To make these product types show up, add the missing features: