Portable Document Format (PDF) is now officially an international standard. The International Organization for Standards (ISO) has published ISO 32000-1:2008, Document management – Portable document format – Part 1: PDF 1.7. This is an ISO standard based on PDF 1.7. Here is a link to the ISO press release.
Work is currently underway for the development of ISO 32000-2. To participate in the development of the next version of PDF; get involved. In the United States; the PDF Reference Committee is managed by AIIM.