I didn't do anything different - all output showed in the PowerShell window I ran the command from - no new window was launched.

And just a note, I use PowerShell now exclusively - I never use CMD.exe anymore. PowerShell, I've learned, is sooooo much more capable and I've grown to love it over the past year (yes, I was a late adopter - much like how I'm now picking up Python much to my chagrin since everyone at $work uses it).