In E2B v1.75BetaH I have added a new \_ISO\WINDOWS\SVR2016 folder for the upcoming Server 2016 release. It uses the 'Win8 install' grub4dos batch file and so allows you to specify a Product Key or XML file in the same way as for Win8 ISOs.
Please test it out and feed back any comments (steve at easy2boot dot com), as I intend to make this the new v1.75 release version soon.
Please test it out and feed back any comments (steve at easy2boot dot com), as I intend to make this the new v1.75 release version soon.