I'm way behind on my Community Server forums reading, so this has probably been covered. Community Server 2008 displays a personalized home page for registered users. Anonymous and users not logged-in see the welcome page. Below is the new personalized home page on a virginal CS2008 site.
On a client CS2008 site I'm theming and configuring we want all users to see the welcome page all the time, like in prior versions of Community Server. I was thinking I'd have to do something tricky, but fortunately the CS Core Team (who are trickier than me) provided a simple checkbox to do the job. Nice.