Welcome Image of Tomcat 8 Installation contains "Apache Tomcat 7" (See attachment). I recommended to change it to "Apache Tomcat 8" and it will be nice to have new icon/new welcome image for tomcat 8 so we can distinguish between the server.
I've fixed the welcome page. That will be corrected for 8.0.2 onwards. The icons are currently consistent across all Tomcat versions. I'm not convinced of the benefits of changing them. Maybe it would be possible to add the major version number but I'm not sure how readable that would be.