Firefox 142 rolls out today with some new stuff: news stories can be curated by topic on new tabs (US only for now), new exception lists to Enhanced Tracking Protection, and wllama API support so web extensions can run LLMs on your device. "Yay", I guess.
Firefox users report high CPU and memory usage in the latest release, caused by browser's on-device AI inferencing for its 'smart tab grouping' feature.