Axaio has also added support for PDF Processing Steps to their Illustrator plug-ins MadeForLayers and MadeToPrint. Already last year the InDesign plug-ins have been enhanced with PDF Processing Steps features.
PDF Processing Steps were defined by the Ghent Workgroup and will soon be releases as ISO standard 15993. PDF Processing Steps allow standardized identification of non-printing objects in packaging files (e.g. dieline, braille, varnish, folding) and help automating production.