You don't have to wait until the official release of Visual Studio 2013. For the time being our plans include Visual Studio 2013 Preview support, and the planned release for it is Q3 2013 expected in mid-October.
Let us know if you need any further information on Telerik OpenAccess ORM.
OpenAccess ORM Q2 2013 brings you a more powerful code generation and a unique Bulk Operations support with LINQ syntax. Check out the list of new functionality and improvements shipped with this release.