Rivian’s 2026.03 software update brings smarter cold weather range visibility, expanded performance features like Launch mode and broader Sport mode availability, improved Kneel Mode usability, and smoother visuals powered by Unreal Engine 5.5 across both Gen 1 and Gen 2 R1 vehicles. Add in the new Apple Watch app and a long list of stability and driver assist refinements, and this is a well rounded update that quietly improves the entire ownership experience.