Lutron Caseta P-PKG1W-WH vs P-PKG1W-WH-R

Is there a difference between P-PKG1W-WH and the P-PKG1W-WH-R (with the -R)?

I am guessing the '-R' might be a RETAIL packaging designator? Maybe for the big box stores like Best Buy, Home Depot, and Lowes?

Just a guess.

Ok good enough .. I just wasn't sure if it was a different model ...

This is what I found on Lutron's site for model numbers http://www.lutron.com/en-US/Products/Pages/SingleRoomControls/CasetaWireless/ModelNumbers.aspx