The #WWDC23 sessions that aren't *specifically* about developing spacial stuff do not refer to the Reality Pro by name — only "your device" or "xrOS device”. I'm guessing the name was either under wraps or up in the air until the last minute so they were told to keep it vague
@samhenrigold I’ve also heard “headset” and “reality” in some sessions. Also it’s the Vision Pro!