We're somewhat surprised to see so many keyboard cases actually arriving in the early days of the iPad Air, but following Kensington's batch, Belkin has shipped the Qode Slim Style Keyboard Case ($80) and Qode Ultimate Keyboard Case ($130), each arriving in boxes without the Qode name. Despite the fact that they come from the same product line, their keyboards are actually different. The first case is a folio that uses faux leather straps at the top…