The Quest 3 doesn't come out for a couple of weeks, but Meta is already announcing some promising updates for prospective buyers
Per UploadVR, the Quest 3 (which launches on Oct. 10) will get an update in December that delivers upper body tracking and "AI-estimated legs." The headset has some side cameras that aim down, allowing them to track your torso and other appendages for more immersive, realistic body movements in simulated environments. Before the update, Quest 3 (and pretty much all other VR hardware) could only accurately track head and hand movements.
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Regardless, it's nice to see Meta working on adding immersion-boosting features to a headset with plenty of them. I didn't necessarily feel that it needs upper body tracking when I got to try the Quest 3 for myself, but it couldn't hurt.