FileMaker Now: http://www.filemaker.com/news/newsletter.html
FileMaker Now is a web-based newsletter published by FileMaker, Inc. It contains news about product announcements and upcoming events, as well as a tech support Q&A.
FM NewsWire: http://www.fmnewswire.com/
Another service provided by ISO Productions, the FM Newswire is exactly what it sounds like. It lists training announcements, product update announcements, and other FileMaker-related news stories.
The Hot FileMaker Pro News section lists FileMaker-related product announcements and user group meetings.