Can I create an Overview page announcement?
Yes! You can create an announcement that appears at the top of a project’s Overview page. The announcement could describe the project, give a special announcement, or say anything else you want people to see.
To set yours, click the Project Settings link in the upper right corner of the screen. Then enter your text and check the “Yes, display this announcement” checkbox. Save your changes and you'll be set.
Your message will then show up on the Overview page, like this: