Found another web site not in English but I translated it and it's reporting the following specs:


This new keyboard will be called PSR-SX ... (There will be three numbers at the dot). With parameters like:
- Touch screen with Genos-like interface (but a little smaller)
- Sample memory is 1Gb
- 4-way Joystick like Genos
- Two USB ports located on the front
- There are REVO Drum and KinoStrings
- Two Live Control nipples move towards the Volume knob
- Many new styles and voice
- Internal memory (Unknown)
- New features (Unknown)
- Black functional buttons, control styles, regist, OST buttons ... with plastic and blue LEDs like Genos (Rubber button has been removed)
- The 61 key keyboard does not have any upgrades, still using the rubber elastic touch key like S975, no after touch.
- Full body in black plastic
- Weight about 11.5kg
- Expected to be released in October 2019