The Jan 2012 working draft of the C++ standard is here in PDF form:
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3337.pdf
Is it publicly known what source format and process/tools are used to produce this PDF?
Are those source files also publicly available?
Is the document content available in any other format than PDF?
The LaTeX sources are on GitHub along with instructions for building them.