First Public Draft of Open XML is Published by Ecma
And this is just the first draft
Microsoft spokesperson, commenting on the 4,000 page
first draft of Open XML, as quoted at
The first draft of Open XML has been posted for public viewing at the >Ecma Website, five months after Ecma accepted Microsoft's submission of what was then less-appealingly referred to as the XML Reference Schema. The most detailed source of information I've found so far is this page at Brian Jones' blog, which focuses heavily on XML in Office and the development work on Open XML file formats (Brian is a Microsoft Office Program Manager who has frequently provided public comments on the progress and purpose of Open XML). You can also find short press articles at >NetworkWorld.com, by IDG's Elizabeth Montalbano, and at by Peter Galli. Both Elizabeth and Peter have been following the ODF/XML Open story for many months.
According to Jones, the specification is now 4,000 pages long (roughly twice its original size) and has been the subject of weekly two hour conference calls and three day face-to-face meetings about every two months.
Each of these sources is quite brief, and therefore there is little new information to be gleaned about the draft specification, short of downloading it and diving in yourself. For those not so able or inclined, though, here is one out take from Brian's blog that is instructive regarding the differing approaches (and constraints) represented by the ODF and the XML Open approaches: