The April 2006 Newsletter announced a transition to Zen Cart.
The following message currently appears in the Miva Section of the Panel:
We have decided to decommission our use of Miva. This was for a variety of reasons including their lack of support for MySQL 5, problems with NFS, relatively poor customer service, and the great quality of our new FREE one-click install, Zen Cart!
If you are currently using Miva, you may continue to do so forever of course! For the foreseeable future, we will continue doing our best to assist you with any Miva-related issues as well. We will not, however, be offering any future updates to Miva Merchant. Thank you for your understanding!