While we can't be certain the Meta Quest 3 will have 5G support, we've heard previous rumors that the headset would be able to stream PC-quality VR games over cellular networks.
The Quest 3 shows up at the FCC with Wi-Fi 6E, hints of 5G : Read more
The Quest 3 shows up at the FCC with Wi-Fi 6E, hints of 5G : Read more