The tablet you see at the top of the photo is the Lenovo ThinkPad Helix.
As you can see, the Helix is considerably bigger than the iPad (which is not a current iPad model) in the photo below it. It's also heavier at 835g, according to the Lenovo web site.
Essentially, the Helix has the guts of a Windows laptop - a Core i5 processor - inside. And that is the idea. Slot the Helix into a special keyboard and it becomes a Windows laptop.