Disklavier

I am new to this forum and a new owner of a used 2003 DC1A Mark III. I would like to upgrade to the KDC-850 but the user interface seems a bit out dated and not very user friendly (for example, recording a song and editing the name of the song). Do you guys know if 
1. Yamaha is planning on updating this unit in the near future so I don't invest in a box now that will be replaced soon and 
2. What is the best deal out there for it? I've heard wholesale is around $800 and retail I got pricing from $1,400 to $2,100.

Thank you for your help