Learn about new option for setting your default spreadsheet editor.
A new drop-down box was added to the "General" tab of the "Application Options", allowing the specification of the default editor for opening spreadsheet files. If the "Spread Sheet File Editor" is set to an application that is not installed, a prompt dialog will be displayed.
If LibreOffice is installed on your system, you have the following three options available:

For more information see General Tab Reference (Application Options).
The Microsoft Excel XLSX format is now supported and is the default format for modifying files such as Threads, Clearances, or Sheet Metal Bend Tables. Files can be saved in the XLSX format, and Inventor will prioritize and use the XLSX file first.