I just received an email from "Musically Yours" about Genesys. Here is the info:

He said that there is no difference between genesys and sg-1 keyboards and that it is a collaboration between the 2 companies. Expected release date in UK is end of May, for the rest of the World - late June. The price is not confirmed yet but they expect it to be approx £2500.00 (As this is direct replacement for the WK8SE).

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New Yorker