Today NVIDIA announced DLSS 3.5 further enhancing Ray Tracing and Half-Life 2 RTX was also announced. So let's go over the details.
Firstly Half-Life 2 RTX is being built by the community. Four top Half-Life 2 modding teams have come together including the people behind Half-Life 2: VR, Half-Life 2: Remade Assets, Project 17, and Raising the Bar: Redux under the banner of Orbifold Studios. They've been given access to the latest RTX Remix and they're rebuilding materials with Physically Based Rendering (PBR) properties, adding extra geometric detail via Valve’s Hammer editor, and leveraging NVIDIA technologies including full ray tracing, DLSS 3, Reflex, and RTX IO.
You can see a lot more in the NVIDIA announcement. The project also has a dedicated website. Like previous RTX remasters, it will probably not have Native Linux support but will be playable with Proton.
The other big one is NVIDIA DLSS 3.5 that NVIDIA say features "Ray Reconstruction, a new AI model that creates higher quality ray-traced images for intensive ray-traced games and apps". It is trained with "5x" more data than DLSS 3, and recognises more ray-traced effects that NVIDIA say allow it to "make smarter decisions about using temporal and spatial data, and to retain high frequency information for superior-quality upscaling". So basically put it's supposed to continue making ray-tracing look better, while also giving you potentially better performance.
You can see an example of it below with Cyberpunk 2077 and below that is a Tech Talk with NVIDIA VP of Applied Deep Learning Research, Bryan Catanzaro:
See more about DLSS 3.5 here.
Additionally the previously released Portal with RTX will also be getting an upgrade to use DLSS 3.5 "later this fall", along side an update to the NVIDIA RTX Remix used for it that improves performance and the quality of path tracing for older graphics cards.