I was reading Brian Jones' post this morning on the Open XML SDK tech preview which is a new managed .Net API for programming against the Open XML formats that was announced today at TechEd. There is also a channel 9 interview on the OpenXML formats and the availability of the .Net API. The preview is available for download from the Microsoft Download Center. One thing that caught my attention in the post was that there is a Java SDK as well for programming against the Open XML formats – check out the project website and Brian's post on the topic.
It looks like Altova is also adding support for OpenXML in the new version of XMLSpy – here's the press release from Altova and a quick rundown on the features.
If Open XML development is something you're interested in – check out http://openxmldeveloper.org/ and get engaged with the community.
Thanks for reading!