Name:  R4-V6 name:  R4-V6 line:  Disney Droid Factory release date:  May, 2015 source:  - note:  This is the sixth R4 astromech version (thus V6) released in the Disney Droid Factory series. link:  Adam Pawlus' review Wookieepedia:  astromech droids. Wookieepedia:  R4 series.