In the new chip version, it should not be about an increased performance. Instead, you can expect fixes and security fixes because vulnerable locations have been discovered that are primarily responsible for the Tegra-210 chip.
But that’s not all, because an upgrade of the PCB and 8 GB of memory is also pointed out. Currently, the switch has only 4 GB of RAM. Whether the changes are actually implemented, remains to be seen, as they could only be associated with Dev kits.