Update: I'm told that this command-line option works in Windows 7, as well. So it's not a change for Windows 8/2012. I just didn't have a Windows 7 machine handy to test it.
The command-line parameters for the Event Viewer have changed in Windows 8 (and Windows Server 2012, I assume). To launch Event Viewer to connect to another machine from the command-line, execute the following:
I just ran Sysinternals' strings.exe command to determine how to do this. If I figure out more of the parameters, I'll update this post.