Cannot find new versions of the Fabulous 40 application templates

Microsoft is not releasing new versions of these templates for SharePoint 2010 Products. Also, .stp  files are deprecated and can't be used to create new sites when you upgrade to SharePoint Server 2010 or SharePoint Foundation 2010.

So, what do you do when you want to upgrade?

Sites based on these templates should upgrade, but you'll want to try out your upgrade in a test environment before you upgrade your production environment so that you can catch any potential issues.

http://technet.microsoft.com/en-us/library/cc262967(office.14).aspx#FAB40