Renders of a transparent case for the LG G9 have leaked, perfectly matching the OnLeaks renders. However, there may have been some confusion this might actually be the LG V60 (the back panel of which we saw yesterday).
A protective case for the LG G9 (or perhaps the V60)
The renders of the case confirm that there will not be a fingerprint reader on the back, instead an in-display reader will be used. They also show a quad camera on the back, though case renders are only reliable for the position of holes and not so much whats inside them.
Theres definitely a 3.5mm headphone jack on the bottom side, next to the USB-C port and opposite the loudspeaker grille.
Whether its the LG G9 or the V60, this phone will be unveiled at the end of February at the annual MWC actually, well see both devices.