Allen Thraen at Episerver has released an open source project that lets you turn your non mobile adapted website to a mobile adapted one. Its in alpha mode right now, but I think it looks promising. We will definitely try it out soon. Great work Allen!
I took the liberty of stealing the description:
"Mobile Pack for EPiServer CMS is a one-size-fits-all generic mobile web app, that will let you easily add a mobile web app to any web site running on EPiServer CMS 6 R2 (or later).
It's based on JQuery Mobile and can reuse content from the entire site."