XQJ (JSR 225) interface
Saxon's implementation of the XQuery API for Java (XQJ) (jsr-225) has been upgraded to conform to the version 0.9 specifications released on 12 June 2007. The specifications can be downloaded at http://jcp.org/en/jsr/detail?id=225. There are some incompatibilities: applications will need to be changed, though probably not extensively.
Please note that this API is still a draft, and Saxon's implementation will change when the specifications change.