Well, not really. For a moment I thought that Microsoft is planning to truly standardize its products across platforms. But the article is referring to making older Microsoft formats available in the public domain as a sort of "open source" feature. Since Adobe has already created the Portable Document Format (.pdf) and anyone with a modern operating system can simply "Print to PDF" for cross-platform and archival compatibility, it seems that Microsoft is missing the point.
What we really need from MSFT (market cap $297 billion) is cross-platform standardization now! For example, it would be wonderful if an Excel spreadsheet list-wizard-created-database in OSX would offer exactly the same options when opened in Windows. It doesn't. Or that a Mac user could open a Project file without recourse to Virtual PC. Microsoft doesn't even offer Project for OSX.