wireless and battery questions xyz board r2

The firmware includes a full BLE HID stack but logs "ble disabled". Is a wireless variant or a BLE-enabling update planned? Can it be enabled on existing hardware?

It reads vendor/variant from board_info.json before falling back to eFuse — what variants exist, and what do they change?

What is the 4-pin JST (J1) wired to — the I2C accessory bus? Pinout/voltage?