Apps installed via PKG for all users update automatically when a new version is released, provided the user has the necessary permissions.
While individual users typically download the DMG file from the official Slack website , the PKG version offers several enterprise-level advantages: download slack pkg
Users may have an old DMG-based version installed in their user ~/Applications folder. For the PKG version to work correctly, it is best to remove any existing DMG versions first. Deploy Slack for macOS Apps installed via PKG for all users update