23 Feb. 2010
The way that I understand it, PAF will no longer be updated, but it will remain available in the LDS web site for downloading.
There are big changes going on with the LDS web site and the Family History Library, along with the way that LDS members do Temple work, and all of that requires a more powerful and closely integrated genealogy program. Eventually all of the microfilms will be available in digital form on-line, and Temple work will be handled the same way.
Ancestral Quest appears to be one of the ways that the focus will shift. PAF is itself a modified form of an older version of Ancestral Quest, and the latest version of Ancestral Quest is designed to work with the PAF file format and to integrate with the new LDS web site. Other genealogy programs are also either currently compatible with the new web site or soon will be certified. You can check on the LDS web site as to the status of other genealogy programs.
For most people, PAF will continue to be a viable genealogy program to use.