I got an email yesterday from Takeshi over at DiscountASP and they just launched free IIS7 Beta hosting for all customers who are interested.  You can get all the details at http://www.discountasp.net/sp_iis7hosting.aspx

This is a great way to experiment with the great new features of IIS7, especially the integrated extensibility pipeline and ASP.NET integration.  With the release of IIS7 with Vista, now is a great opportunityto begin familiarizing yourself with what IIS7 has to offer.

Enjoy.