This plugin will let you add a message, including an optional title, to the login page. The message will appear over the login form, and you can easily change the text being shown as well as the font sizes for both the title and message text. You can style the different message elements using CSS, giving you complete control over the visual aspects. For more information about this, see the Additional information tab.
Just like the rest of my files, this plugin is and will always be completely free. All I ask in return is that you leave a review below if you find this plugin useful.
As of version 1.0.0, there are no known issues.