According to PACER's July 2011 Quarterly Announcements, PACER courts are going to be migrating to a new technical format that some people have already been using called PDF/A. According to more detailed information from PACER, the PDF/A format "... is an International Standards Organization (ISO) standard document format. The standard has been published for almost five years and is available in the current versions of all major word processors and scanning systems. It is a subset of the PDF standard which excludes those PDF features that give rise to concerns about the ability to archive documents." The key seems to be the ability of PDF/A documents to be archives for NARA. The PACER release indicates that there is no national transition deadline and that courts will establish their own dates for the changeover. Apparently, this change will not affect PACER users, who PACER hopes should be able to view both traditional PDF and new PDF/A formats with their regular PDF readers. If you want to test whether your PDF software can open PDF/A documents, try this link for a sample document. A software matrix from Adobe that I found indicates which software programs can create and validate PDA/A documents.