Preview Microsoft Exchange 2013 you can install on a system with Windows Server 2008R2 SP1 or Windows Server 2012 as we described it here:
Microsoft Exchange 2013 Preview installation requirements
Before installing the role of Client Access Server (CAS), we must remember that the firewall on the server-u add an exception for port 139, the rules Inbound.
Installing using CMD command line:
Installation using the CMD does not differ much from the installation of Microsoft Exchange 2010.
The command line run the course with elevated privileges (Run as Administrator).
The new version no longer uses Setup.com but Setup.exe command syntax looks like this:
Setup.exe [/Mode:<setup mode>] [/IAcceptExchangeServerLicenseTerms]