Which technique provides a high-level timeline for the product's evolution based on its vision?

The technique that provides a high-level timeline for the product's evolution based on its vision is Agile release planning. This approach is integral to Agile project management because it aligns the development activities with the strategic vision of the product.

Agile release planning involves establishing a roadmap that outlines the major releases or increments of the product, often organized around customer feedback and market changes. It enables teams to prioritize features, set expectations for delivery, and adjust timelines accordingly. This roadmap is flexible, allowing for iterative adjustments as the project unfolds, ensuring that the development process remains aligned with the overarching goals and vision.

In contrast, other techniques listed serve different purposes within project management. The critical path method is focused on identifying the longest stretch of dependent activities and measuring the time required to complete them, rather than providing a strategic view of product evolution. Earned value analysis is used to assess project performance by comparing actual progress against planned performance, emphasizing budget and schedule efficiency instead of high-level planning. Milestone tracking focuses on monitoring specific points in the project timeline rather than offering a comprehensive view of the product's vision and evolution.

Thus, Agile release planning stands out as the most fitting technique for providing a high-level timeline that reflects the product's vision.