As most people who read this blog know, the development of PDF didn’t end with the ISO 32000 (aka PDF 1.7) specification. Adobe has published three extensions to the specification. These aren’t called PDF 1.8, but they amount to a post-ISO version.
The ISO TC 171/SC 2 technical committee is working on what will be called PDF 2.0. The jump in major revision number reflects the change in how releases are being managed but doesn’t seem to portend huge changes in the format. PDF is no longer just an Adobe product, though the company is still heavily involved in the spec’s continued development. According to the PDF Association, the biggest task right now is removing ambiguities. The specification’s language will shift from describing conforming readers and writers to describing a valid file. This certainly sounds like an improvement. The article mentions that several sections have been completely rewritten and reorganized. What’s interesting is that their chapter numbers have all been incremented by 4 over the PDF 1.7 specification. We can wonder what the four new chapters are.
Leonard Rosenthol gave a presentation on PDF 2.0 in 2013.
As with many complicated projects, PDF 2.0 has fallen behind its original schedule, which expected publication in 2013. The current target for publication is the middle of 2016.