If you look at the list of "new" SD1 patterns/styles being offered by Ketron http://www.ketron.it/home.htm
(under styles), it is these styles that will most likely be included with the SD1 plus .
Now add the 200 song library included on the XD9 and put them into the SD1 .
Than include OS 4.0 and label buttons to help the end user navigate the new implemented features .
Paint the disk cover silver .
And you will have a SD1 plus !
This is only my educated guess .
Waiting for official word from Italy.
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