For a full review of the Tyros 3, check out this url:
http://www.yamahapkowner.com/?page_id=585

Yamaha have released both the Tyros3 and Tyros2 file conversion software for Windows. This application converts files of the Registration Memory, Song, Style, OTS (One Touch Setting), Multi Pad, Custom Voice, and Custom Voice Library created on the Tyros2 for use with the Tyros3.

Yamaha have also released the Tyros2 edition of the software. Owners of the original Tyros(1), PSR-9000 or 9000Pro keyboards first need to convert files to Tyros2 compatibility before running the Tyros3 file conversion software. (You can’t use the Tyros3 conversion program to convert files straight from Tyros(1) to Tyros3!).