Useful FAQ on the Adobe/PDF news; excerpt:
Why is Adobe taking this step with PDF? PDF has become a de facto global standard for more secure and dependable information exchange since Adobe published the complete PDF specification in 1993. Both government and private industry have come to rely on PDF for the volumes of electronic records that need to be more securely and reliably shared, managed, and in some cases preserved for generations. Adobe expects this release to ISO to drive even broader adoption of PDF, accelerate innovation around PDF and ensure that PDF will continue to meet the unique needs of government and private industry alike.