I've installed Windows Server 2012 Standard and the demo version of FMPS13 to try Webdirect.
Everything seems to work. I only would like to know if it will also work when upgrading toe Windows Server 2012 R2 Standard.
FileMaker Server 13 is certified to work with Windows Server 2012 Standard but as of yet has not been tested / certified to work with Windows Server 2012 R2. See here for more information on the tech specs for FileMaker Server 13.
Do we have any word from FileMaker on plans to officially support FMS 13 on Win 2012 R2? Seems crazy to get a new server with 2008. I cannot get a new VM with Win 2012 at my institution. Windows team tells me FileMaker is the only app they have heard of that at this point is supported for Win 2012 but not 2012 R2. This is the kind of stuff that gives FileMaker a bad name and leads people to jump ship and move to APEX.