Microsoft Dynamics GP 2013 Released to Manufacturing (RTM) Mariano has the coverage.
The Dynamics GP Blogster: Microsoft Dynamics GP 2013 Released to Manufacturing (RTM)
Sales, Purchasing & InventoryMicrosoft & the GP EcosystemGP 2013
Archived post from 2012. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.