1. The surface of the X5 scroll wheel has been changed to a smooth rubber for the best appearance and friction.
2. The circuit board of the X5 is being modified to fine tune its sound.
3. The firmware will be much more stable than that used in the demo units at the launch event, but USB OTG and DSD support will be delayed until a coming firmware update.
4. The first units will be shipped out to China this Saturday and it is estimated that 2000 units will be shipped out within two weeks thereafter.