There's a new article about o:XML on XML.com called 'Introducing o:XML'. It presents o:XML as a practical programming language that solves real problems in the XML domain:
"For many types of applications it already provides faster, easier, better solutions than any other technology. If you are writing code that processes or produces XML, chances are you will benefit from using o:XML."
The article also explores why XML-based languages have the potential to bring change into the software development process itself:
"With XML, the source code is made transparent, it can be processed in the same way, with the same tools that we use for other structured information."
The article can be viewed here - there's also a print version available.
Examples from the article can be downloaded from our download server.