I see there is more news in another email from Ketron:

KETRON are pleased to announce the release of new USB Pen Drive for SD9, SD60, SD90

Styles Pop Lounge ( https://www.ketron.it/en/products/305-pen-drive-usb/styles-pop-lounge?acm=13749_188 )
Audya Styles vol. 1 ( https://www.ketron.it/en/products/305-pen-drive-usb/audya-styles-vol-1?acm=13749_188 )
Audya Styles vol. 2 ( https://www.ketron.it/en/products/305-pen-drive-usb/audya-styles-vol-2?acm=13749_188 )

K E T R O N s.r.l.