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DocBook Future

the first betaversion of DocBook V5.0 was released three weeks ago
- improved validation thanks to RELAX NG + Schematron based schemas
- DTD and W3C XML Schema are also provided for legacy tools
- simplified several content models
- all DocBook elements are now in a namespace
- every element can work as a link (XLink)
new XSLT 2.0 based version of the DocBook XSL stylesheets is under development
- no need for extensions, pure XSLT 2.0 code
- advanced things like profiling or internationalized indexing are enabled by default