A number of companies have already introduced cases for the iPad Air. While many of these cases are merely remakes for the new device, there are some brand new cases, as well. Belkin has introduced a number of new products, including three keyboard cases: Qode Ultimate Keyboard Case ($129), Qode Thin Type Keyboard Case ($100), and Qode Slim Style Keyboard Case ($80). The company also introduced two new folio stand cases, the FreeStyle Cover ($60)…