With Battleifled 1, Battlefield 4, and Battleifeld V now playable on Xbox Series X at up to 120fps -- very cool. The latest batch of games to get the FPS Boost treatment covers 12 EA games, all of which are currently available via Xbox Game Pass Ultimate which includes EA Play.
Here's a breakdown of the games and the new FPS Boost.
Battlefield 1 - 120hz*
Battlefield 4 - 120hz
Battlefield V - 120hz*
Mirror’s Edge Catalyst - 120hz*
Plants vs. Zombies: Battle for Neighborville - 120hz
Plants vs. Zombies: Garden Warfare - 120hz
Plants vs. Zombies: Garden Warfare 2 - 120hz
Sea of Solitude - 60hz
Star Wars Battlefront II - 120hz*
Star Wars Battlefront - 120hz
Titanfall - 120hz*
Titanfall 2 - 120hz
Unravel 2 - 120hz
All of the above apart from Sea of Solitude can now run at 120fps on HDMI 2.1 capable displays on Xbox Series X, with some limitations to the Xbox Series S (in that the titles above with an * are Series X only). Microsoft does note that for some titles to hit 120fps, like Battlefield V and Star Wars Battlefront II, FPS Boost is not turned on by default as the resolution is lowered a bit to hit that target.