From the Apple Support website:
This update includes enhancements to existing actions and reliability improvements to editing and running shortcuts.
Updated Actions
- Send Message now supports images and attachments when “Show When Run” is off
- Make Rich Text From Markdown now displays a preview instead of an HTML file on macOS
- Ask For Input now correctly uses the “Default Date” when asking for dates
- Calculate now correctly computes Modulus operations for decimal numbers
- Choose From List now supports “Select All Initially” when a dictionary is passed in as input, and works from Siri on watchOS when “Select Multiple” is on
- Open URL correctly handles URLs that contain variables, and now works from the Action Button on watchOS
- Take Photo runs more reliably when “Show Camera Preview” is off