This camera might be the professional camera that is scheduled to be released during Q1 or it could be a refresh of an older camera like the RX10. The translated leak is below:
Sony’s “WW638397” has been registered with an overseas certification body. Equipped with Wi-Fi (5GHz / 2.4GHz). (Shanghai Suoguang Video Co., Ltd. is Sony’s Chinese subsidiary)
via Nokishita