I purchased 2 Ultras - one at Walmart (4670RW) and the other from Amazon (4670X). They are both running 9.3.0 Build 4143-46. I had set up the RW model before it updated to 9.3.0 and added the FandangoNOW channel. When I set up the X model there was no option to add FandangoNOW and I finally realized that there were 2 entries in the main menu list for Fandango - Movies and TV. Seems a little strange as I expected that there would be no difference in functionality.
FandangoNow was the competition to Walmart owned Vudu, so they weren't going to sell Roku's with it advertised front and center. Of course Fandango is buying Vudu from Walmart.
The X suffix was for roku's sold on-line, it is also actual Roku device. R stands for Retail, ones sold in brick and mortar stores. Of course W stands for Walmart.