The OpenDocument format (ODF) 1.3 is now supported in Microsoft Word, Excel, and PowerPoint alongside the Office Open XML (OOXML) format that uses file extensions such as .docx, .xlsx, and .pptx. The ODF 1.3 specification adds support for many features already supported by the OOXML format, and now these features can be saved by Word, Excel, and PowerPoint.
With the latest Microsoft Office build 14420.20004 (version 2109) Microsoft previewed two new features to Office Insiders who are in the Windows Beta Channel. For more information on what has been changed (changelog), continue reading further.