Logitech has announced its new Logi BLOK family of cases for the iPad Air 2, the first group of products to appear under the new Logi brand, which was introduced last week. The family includes the Logi BLOK Protective Shell ($40), the Logi BLOK Protective Case ($70), and the Logi BLOK Protective Keyboard Case ($130), all of which feature square corners to help protect the iPad. Logitech indicates the cases have been tested to withstand drops from…