I think you're thinking of conhost which is the console window program used to run cmd.exe, PowerShell, et al. That has some new features. But I don't cmd.exe itself saw many, if any changes in Win10.
One of the biggest (maybe silly) change is that cmd is fully resizable. I think Powershell was already able to do this in Win 7. So I think apart from the changes to conhost, cmd itself has been upgraded in some ways.
