The Apple Watch 8 feature I was most excited about might not work at launch

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Apple is expected to announce the next device in its Apple Watch lineup in September, but its rumored body temperature sensor might not work at launch.

The Apple Watch 8 has long been believed to include a way to monitor the wearer’s skin temperature. This tool would provide numerous benefits including being able to better track sleep cycles, possibly indicate if you have a fever, and even detect if you’re ovulating.