Thanks - andreurivero is correct. In future we will need to be more careful about style naming and description as it has caused some confusion. We should also have included the (R) for riff where appropriate but in the haste to get the styles out before the holiday forgot that too!
Thus is from the instructions found at:http://www.ketronmusic.co.uk/styleupdate/support.html
The new Styles are located in “USER STYLES – UNPLUGGED” as follows: @6_8_SLOW_BALLAD @DRIVING_BEAT @QUICKSTEP_TIME @RHUMBA_DANCING @whiter_ballad