There is a new moderated announcements mailing list:
http://lists.openstreetmap.org/listinfo/announce
This is a low-volume list with no chatter. It will only carry notices of things like server down time, new versions of software and any other major events affecting the whole OpenStreetMap community.
Discussion
Comment from Wynndale on 7 October 2009 at 12:00
Does it make any sense to carry the announcements on blogs.openstreetmap.org ?
Comment from marscot on 7 October 2009 at 19:55
why not do a twitter feed for that info too.
Comment from chillly on 7 October 2009 at 20:49
There is an OSM twitter feed http://twitter.com/openstreetmap
Comment from Jonathan Bennett on 7 October 2009 at 21:05
If someone wants to set up a Twitter feed pointing to the Announce archives they're welcome to, but it's not something we're planning to do ourselves.
The feed chilly points out is run by another OSMer, but I think their idea is to report lots of OSM-related news, where the announce list is intended to be just announcements of events that will affect the whole community on an operational level -- new software, downtime, that sort of thing.