Microsoft announces that the upcoming Office 2013 Word will support opening and editing PDFs, announcing today on the official Office blog that it will support both the strict Open XML and ODF 1.2 new file formats. After opening and reading strict Open XML has been supported in office 2010, Office 2013 supports write functionality for the first time.
Open Document Format (ODF) 1.2 is also supported in the new Office 2013, although 1.2 standards have been supported in office 2007 SP2, but it was not until this January that the dvancement of structured was formally passed Information Standards's authorization. Microsoft said: "Office 2013 focuses on improving the standard rules of spreadsheets in ODF1.2, Excel is compatible with open source formula support, the new office also supports the XAdES digital signature, etc."
The following are file format comparisons supported by Office 2013 and previous versions of Office: