I noticed that the SP1 for Dynamics GP 2010 was released, its now safe to upgrade from GP 10.0 SP5 to GP 2010 as long as you have SP1 installed, use below links to download:
Posts from other blogs:
Mariano Gomez: Microsoft Dynamics GP 2010 Service Pack 1 now available!
David Musgrave: Microsoft Dynamics GP 2010 Service Pack 1
Geofrrey Wayong: Microsoft Dynamics GP 2010 Service Pack 1 has been released!
Amy Walsh: Dynamics 2010 SP1 Release
Jivtesh Singh: GP 2010 SP1 is out!