Below is a link to a PDF slide show overview of the WG137 working group's goals and progress.
Click on the image above to view the WG137 overview PDF slideshow.
With recent PDF security updates by Adobe, weird behaviors have been occurring when trying to view a PDF via a web page. These behaviors are a function of what computer type you are using, what browser you are using, and updatedness (recent version vs. old version) of your software. If you click on the link above and only get a white (blank) page, click on the "reload/refresh" button of your browser (this solves the problem 90% of the time). If you still have no luck, save the PDF to your computer and open it directly from there.