Disklavier

I understand that a Disklavier Mark II can be upgraded with a DCD1 cd 
player and have pianosmart features.  I read the excellent writeup on 
Carol Beigel's web-site here: www.carolrpt.com/pianosmart.htm

My question is can a Disklaver Mark II be upgraded to have the
"Silent 
System" features?

Thank you,

Ken Gorman