The W3C has announced that XForms, is now a Proposed Recommendation, after certification of one full implementation (open source Java XSmiles from Finland) and two more implementations of each feature (the Internet Explorer plug-in FormsPlayer and the Java standalone Novell xPlorer).
XForms is the next generation of forms for the Web, and uses an XML-based three-layer model: data model, data, and user interface. XForms uses CSS for device independencence and is designed for integration into XHTML 2, SVG, and other XML-based markup languages.
A host of other implementations are available or in progress, but my pick for most interesting is DENG, which is an XForms to Flash compiler written in Flash. DENG supports XForms, SVG, RSS, XHTML, and CSS.
XForms is in consideration for other standards as diverse as Universal Remote Controls and the UK Government Interoperability Framework, and was developed with the participation of IBM, Oracle, Xerox, Adobe, Novell, SAP, Cardiff, PureEdge, and a host of other companies, universities, and invididuals.