Might be the PX-5S replacement that geets announced at musik messe or later this year....
  Ummm, didn't know about that.  I was just about to spring for a PX560 but now I have to wonder if any that might be upgraded as well.  Is this fact or speculation?
chas 
Speculation...
Based on some info on the casio forums..  The px-5s replacement will have the touchscreen display (thats all we know, when is speculation) 
However, the Casio fanbase seems to really be in for an 88 key all around workstation..