The Digital Medievalist Project has an RSS News Server http://www.digitalmedievalist.org/news/. You are welcome to post news about your projects, conference sessions, or software to this server. In the beginning stages of the project, we ask that you send your news items to the editors for publication. We hope in the future to set up a web-based form to allow you to submit items.
We also have a page of listing conferences of interest to digital medievalists. If you know of one that is not included, add it!