New cases and accessories for the iPad 2 are continuing to roll in from manufacturers. Griffin has announced updated versions of its Elan Folio Slim textured polyurethane folio case ($40) and CinemaSeat headrest adapter/case ($40) for the iPad 2, along with new colors of its Sylus for iPad ($20). Speck has introduced its iGuy case for the iPad and iPad 2 ($40), a revised version of its iconic case for the original iPad that debuted at the 2011…