Dynamics GP 2018 is expected soon, Microsoft has officially published the system requirements for GP 2018 which can be found on the link below:

It's important to note that the requirements above are still subject to change until the release of Dynamics GP 2018.  

Additionally, the following are no longer supported with Dynamics GP 2018:
  • Windows Server 2008 all editions
  • Microsoft SQL Server 2012 all editions
  • Microsoft Windows 7 all editions

Best Regards, 
Mahmoud M. AlSaadi