Is it planed to release a version of tools for S90XS and MOXF8 for Android System?
These tools are created by Yahama. No one around here can provide that information unless it's specified publicly by the manufacturer/developer of the device. The best way to obtain this data is through contact. Access the page below and contact Yamaha directly and they should provide all the necessary information related to the release on mobile platforms for S90XS and MOXF8 devices/applications.
Contact page: http://usa.yamaha.com/support/contact/