While work is ongoing to provide brand new Intel Xe Vulkan drivers on Linux with their newer driver, work is still happening to improve the current driver.
Merged recently is support for Sparse Binding on the i915 driver, which is required by vkd3d-proton to support Direct3D 12 features to run plenty of modern games including (according to this feature request) the likes of DEATHLOOP, DIRT 5, Marvel's Guardians of the Galaxy, Assassin's Creed: Valhalla, Forza Horizon 4 and 5 and no doubt plenty more.
So when Mesa 24.0 releases, users of Intel GPUs should hopefully get a much better gaming experience with the i915 driver able to run many more games with Proton. Mesa 24.0 isn't due until early 2024, with Mesa 23.3 due this month.
Eventually too when the newer Xe driver (more on that here) is fully upstreamed, Intel GPU gaming on Linux might be even better with a properly modern system.