FSR 4 is awaiting a major update – and AMD is now laying the foundation for “Redstone.”

With FSR 3.1.4, AMD is laying the foundation for “Redstone,” which is set to arrive later this year as a major upscaling update for current Radeon graphics cards.

At Computex 2025, AMD announced a new update for upscaling in FSR 4 (“FidelityFX Super Resolution”). The project, dubbed “Redstone,” is intended to improve implementation in three key areas; the release date was set for the second half of 2025.

The company has now laid the foundation for this, as explained in the GPUOpen developer blog. This step is reflected in the update to FSR 3.1.4, which is now available.

AMD Redstone: Four points for a hallelujah

The actual update to FSR 3.1.4 can be summarized quite quickly. Compared to its direct predecessor, only minor ghosting issues have been fixed.

However, things get exciting in the next sentence of the developer blog, because “FSR 3.1.4 also adds the necessary camera parameters to support ML frame generation” – i.e., part of the aforementioned Redstone feature set. Since game developers should be able to switch from FSR 3 to FSR 4 relatively easily, this is an important update.

Basically, Redstone wants to cause a stir with four different points:

• Neural Radiance Caching: This technology uses a grid of AI-powered neural networks that continuously learn from game data and predict how light will spread in a scene.
• ML Ray Regeneration: Aims to address one of the main problems with ray tracing: the high number of samples required for clean images. Instead of relying on conventional denoising algorithms, this AI-based solution reconstructs missing pixel information.
• ML Frame Generation: While AMD still relied on vector-based frame generation in FSR 3, Redstone is introducing a completely AI-based solution – and that’s exactly what FSR 3.1.4. is based on.
• ML Super Resolution: The same applies to the actual upscaler, where AMD uses an ML-enhanced AI model to produce better images, especially at low starting resolutions.

However, there is still a downside to Redstone, as the new features are only available on the RDNA 4 architecture. This means that only the Radeon RX 9070 (XT) and RX 9060 (XT) can benefit from the improved features. AMD appears to have abandoned plans to bring the new technologies to older generations.