One key feature has been enabling V4L2 codec support so that Firefox can utilise the hardware h.264 decoder on Raspberry Pi. On older models of Raspberry Pi, this significantly improves performance and reduces CPU load when playing back HD video.

Source: Bookworm – the new version of Raspberry Pi OS

The Raspberry Pi 5 might be a viable daily-use computer, especially with a decent browser out of the box. Exciting!