There was a recent post by Classic with regard to this new process. I will look around as time permits unless you beat me to it.

"Digitally printed is what Next Gen is with a whole lot of artwork prep to make as close to look and feel like the original screen printed artwork as we believe is possible. The printers that we use are very high end and very high maintenance to keep them from banding and printing correct, which is what most anyone would have trouble doing. The ink is thick and layered, as well as has gloss. The colors match as close as can be matched, and of course digital printers CANNOT print Fluoro or very bright colors - so we only provide those decals silkscreened (Elvira, Party Zone, AFM, and a couple of others). The MB decals we match and I can say as I was there were SPOT ON to the originals as close as can be."

This was posted by Rick at PlantetaryPinball to this thread http://pinside.com/pinball/forum/topic/bad-seller-on-ebay-jeff-classicarcades