This is pure speculation and the information coming out need to be taken with a pinch of salt.
According to Digicameinfo (thanks to Espen Braathen who posted this on 43rumors )
Panasonic will announce a DC-S5M2 which is S5 mark II to us but also a DC-S5M2X.
It's a possibility the difference between the two models are sensor size but usually R in the name is used for for higher resolution and X is used for Range Finder style body. So we might see a Full Frame GX camera soon and later a GX10 for Micro Four Thirds.
Link to 43rumor article.
According to Digicameinfo (thanks to Espen Braathen who posted this on 43rumors )
Panasonic will announce a DC-S5M2 which is S5 mark II to us but also a DC-S5M2X.
It's a possibility the difference between the two models are sensor size but usually R in the name is used for for higher resolution and X is used for Range Finder style body. So we might see a Full Frame GX camera soon and later a GX10 for Micro Four Thirds.
Link to 43rumor article.