The folks at Microsoft’s Macintosh Business Unit (Mac BU) let us know that they will support the new file formats for Windows Office announced last night. “The Microsoft Office XML Open Format is based on an open standard with a royalty-free license that is broadly accessible to any technology provider. The Mac BU will provide Office for Mac users with the ability to take advantage of benefits of the new file format and container technology, which will include easier recovery of corrupted documents, improved security and smaller file sizes.”