I've been thinking about this as well for my application. One idea that came to mind was creating a 'splash' page with summaries and stuff along with a button/

I've been thinking about this as well for my application. One idea that came to mind was creating a 'splash' page with summaries and stuff along with a button/link asking the user if they wanted a 'sneak peek' at what we are currently working on. This way users know they are looking at something that is being worked on and hopefully encourages them to return and see if new parts are finished yet.