has released an updated draft of the Device Independent Authoring Language (DIAL). This document will provide a uniform markup language for filtering and presenting Web content across various delivery contexts.
DIAL is based on standard W3C CSS
modules and XML
vocabularies, which lend a logical architecture for webpage structure, form interaction and presentation. DIAL is also part of the Authoring for Device Independence work category of the DIWG.
Get to know the draft better at the W3C website