The WP MOONlander is very minimalistic and lightweight. It contains a customizable Countdown Clock, MailChimp and Twitter Feed options. Template also comes with a LESS Stylesheet file that you can use to customize the page however you would like.
All users that are not logged is as administrator will see the coming soon template. This allows the administrators to work on the theme while still having a live WP Countie page displayed for everyone else.