A report from Macotakara has breathed new life into speculation about a possible iPad Air 3 and supports previous rumors that the new iPad mini 4 will be thinner than previous models. The blog cites sources saying the iPad mini 4 will have the same 6.1 mm thickness found in the iPad Air 2, making it slimmer than the 7.5mm thick iPad mini 3. The report also notes that the updated 8MP iSight camera found in the iPad Air 2 will likely make its way into…