Microsoft Press Release

Now this is strange though, despite having gone through a fierce battle with ODF and eventually having their standard, OOXML, ratified as a global standard as ISO/IEC 29500, why the turnaround now?

Quoting sniplets from their press release:

The 2007 Microsoft Office system already provides support for 20 different document formats within Microsoft Office Word, Office Excel and Office PowerPoint. With the release of Microsoft Office 2007 Service Pack 2 (SP2) scheduled for the first half of 2009, the list will grow to include support for XML Paper Specification (XPS), Portable Document Format (PDF) 1.5, PDF/A and Open Document Format (ODF) v1.1.

Microsoft will join the Organization for the Advancement of Structured Information Standards (OASIS) technical committee working on the next version of ODF and will take part in the ISO/IEC working group being formed to work on ODF maintenance.

The company will also be an active participant in the ongoing standardization and maintenance activities for XPS and PDF. It will also continue to work with the IT community to promote interoperability between document file formats, including Open XML and ODF, as well as Digital Accessible Information System (DAISY XML), the foundation of the globally accepted DAISY standard for reading and publishing navigable multimedia content.

Why now? Why create a standard and then go the other direction?