With the introduction of Visio 2013 Microsoft has dropped the binary data format .VSS and the XML format .VDX for diagram file storage. VSDX was introduced as the new XML data format for storage of diagrams and consists of a ZIP archive with a bundle of XML files. The TransWare developer team added support (see Blog post about Visio 2013) to write and read native .VSDX files for the new data format. In 2015 Microsoft introduced the new Visio 2016.