I have the same question. I am using WordPress on a site that forces me to set WordPress as my default site editor. I expected WordPress to install and take over my site. I can get into the admin no problem – but when I go to my site, I still see the former home page. I was expecting WordPress to install a default home page using the theme I had selected. I don’t want people to have to add a “/xxx” directory on the end of my domain. So, I wait for an answer as well.