Contentful's new feature, Content Source Maps, offers a streamlined process for linking displayed content in a Next.js project to its corresponding fields in Contentful, enhancing the live preview experience. This feature automates what was once a manual task of adding HTML data attributes for each Contentful element, allowing for seamless integration of inspector mode, which displays hidden metadata on the page for easy connection between the website and Contentful fields. Exclusive to Contentful's Premium plans, Content Source Maps are implemented using the Contentful Live Preview SDK and require familiarity with npm, React, Next.js, and Contentful SDKs. By converting source maps into hidden Unicode characters through a technique known as steganography, the Live Preview SDK enables clickable links within the inspector mode, providing a dynamic and interactive editing experience for content editors. The tutorial outlines the steps to set up this feature, including project initialization, SDK installation, and API configuration, ultimately allowing developers to achieve real-time updates and efficient content management without affecting the website's functionality.