Incipio's Lexington ($40) is back in its third iteration, this time for iPad Air. Once again, it's a faux leather folio with a hard plastic shell to hold the tablet in place. It also still uses a tab hanging off the lid for closure and to support standing positions. Unfortunately, Incipio chose to forego some top and bottom edge protection this time around: there's a long opening running from bottom corner to corner exposing the speakers and Lightning…
