Having mostly produced keyboard cases in the past, Logitech today introduced a handful of new iPad folios. Among them is Turnaround for iPad Air ($60); an iPad mini edition is also available. Made of a vinyl-like polyurethane material, the lid continues around the case's right edge, where a magnet keeps the case shut. Inside there's a standard iPad shell, attached to the folio with a plastic ring. This allows it to rotate from landscape to portrait…