Hey Brian,
It's not a new "Shortcut" key to add. It's functionallity in MoI's user interface that has been updated.

If you hold the cntrl key and click and drag ANYTHING, it will not move the object but move a new copy of the object. A quick "Copy and Paste" type thing.

Create a sphere, then ctrl+drag it somewhere! Presto!

What was being mentioned was that while in "Edit Frame-Wheel Rotate" Mode, THis functionallity wasnt working as expected and now it does again!.