There are two pieces of PCUSA mission news I've been delinquent in passing on recently. Rev. Hunter Farrell has been named the head of the denomination's World Mission area. Read the details on the PCUSA site.
This October, the PCUSA is running a program called 2007 Mission Challenge. The plan is to send 30 missionaries to a different presbytery for a week of programs each week in October. So far, 107 presbyteries have signed up. The ultimate goal is to get more individual congregations supporting missionaries directly.