CivicSpace has announced the ALPHA of their hosted service. This includes CiviCRM 1.3. Please consider helping them out by signing up to be an alpha tester.
From Zack: The service will be similiar to Drupal hosting offered by Bryght but will provide the CivicSpace 0.8.3 Drupal distribution. In the future we hope to launch the ASP publicly as a low cost service for the non-profit & advocacy sector, but for now we are looking for a few brave CivicSpace community members to help us test it. Please fill out the form if you are interested in participating and we will be in contact with you shortly.