https://www.techpowerup.com/331663/the-last-of-us-part-i-updated-with-support-for-fsr-3-1
 
The Last of Us Part I (PC version) was updated to version 1.1.4 last Friday—at the time, patch notes revealed that Iron Galaxy Studios/Nixxes Software had added support for AMD FidelityFX Super Resolution (FSR) 3.1 Super Resolution and FSR 3.1 Frame Generation. Several popular first-party PlayStation titles received similar updates mid-way through last year, so industry watchdogs have questioned the timing of this latest upgrade—up until late last week, The Last of Us Part I was ticking along with support for FSR 3.0 (super resolution and frame generation).

Naturally, Team Red is in the process of preparing FSR 4.0 for an upcoming product launch—now delayed, due to the engineering team requiring: "extra time to optimize the software stack for maximum performance and enable more titles." AMD's latest graphics technology was showcased at CES earlier this month, alongside their new (RDNA 4) Radeon RX 9070 XT and 9070 (non-XT) graphics cards. According to Team Red, it is relatively easy to go from version 3.1 up to 4.1. The Last of Us Part I's development team (for PC platforms) could have everything ready to go in a couple of weeks, and be prepared well in advance for the game's sequel (due in April).
 
Good to see the latest FSR being adapted to the game.