Announcement

Announcement is something said, written, or printed to make known what has happened or (more often) what will happen.
 Writing an announcement, keep the following point :
a. The title / type of event.
b. Date/time, place
c. Contact person 
“An Announcement (ANN) is a usenet, mailing list or E-mail message sent to notify subscribers that a software project has made a new release version. Newsgroup announcement recipients often have a name like ‘comp.somegroup.announce.’. Mailing list announcement recipients often have a name like ‘toolname-announce’. Most software projects that make announcements are open source.”