Could you add an option for Admin Only under the "Display To" Announcements drop-down that besides Everyone, Logged In Only, Not Logged in Only? Like we can on testing new web pages. Occasionally we need to try out things that are going into an announcement - a new PayPal button, for instance. Right now we just move it to the bottom and hope nobody sees it before we get it inactivated again.

The VIEW link allows you to preview your announcement before making it live. Having announcements that only display to admins will add a lot of potential confusion to the site while adding little value since admins can share content on the Admin Forums or by message or email.