Caching and SEO friendly way to allow any page to be used as a splash page or splash overlay.
Templates are not provided, by design. You can manually create a template to style your splash page however you like - by default the SplashGate will redirect homepage visitors to that page, whatever template it uses. If using the fancybox SplashGate option, it is recommended to create a custom template for that page content that will look nice in the small fancybox overlay.
There is a permanent path to the splashpage, "[wp-site-root]/splashgate/". Even if you've already viewed the splashpage, and can no longer see it because your cookie hasn't expired, manually visiting the splashgate path will cause the active splash page to appear.