The next OS update will be Tyros 3 Yamaha releases a new product in each of its market segments every 2 or 3 years. And a lot of people thankfully upgrade to the newest model - even if the changes are often minor. Som recent history:

1995: PSR-7000
1997: PSR-8000
1999: PSR-9000
2002: Tyros
2005: Tyros 2

See the complete list here .

Kind regards,
Tommy
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Yamaha PSR-S770, Korg Krome 61