dbcontext is a new instance of the dblatex project, to convert SGML and XML DocBook documents to DVI, PostScript and PDF output by converting first to ConTeXt macros.
Thanks to the strong and consistent ConTeXt interface, the future expected benefits are:
more supported features, like EBNF language,
real localization support, since UTF-8 or chinese are fully supported by ConTeXt,
cleaner, more powerful, and flexible rendering layouts,
less limitations than with latex (like tables, verbatim in many things, footnotes),
a cleaner XSL code, using only the ConTeXt user interface (no dirty internal macro recoding or specific workaround macros),
a smaller XSL code: many XML features are natively supported by ConTeXt, like MathML,
smaller and less wrapper scripts: texexec is a high level command, and there is no need to call it several times until all the cross-references are found,
a better maintenance and long term support: ConTeXt evolves quickly and integrates many of user requests, but also maintains the consistency and robustness of its interface. Moreover, the official documentation, the wiki site and the user mailing list are the places where to look for (and ask) information about how to use this huge interface.