Hi ,At Ketron in Italy They told me it is the latest version for the SD5.(1.0B )
I dont know if it is an upgrade or a late production version like John explain.
For the intro=it is fix I have to press select pad,press assign and tab 1 you choose the intro.After you press left menu and check the jump.After you press save and power set up and press save.So when you play a melody you press tab 1 and the intro start and you continue to play another melodey with the same style.