This sounds like a probable speculation. Sounds like a refreshing change from the phablet craze that plagued 2015 if this is true, though 5.3" is still a bit on the large size.
https://www.reddit.com/r/Android/comments/3xxo7d/lg_g5_full_phone_specifications/5.3 inch quad hd (sweet spot)
Full metal body
Micro SD card and sim slot on the right
IR blaster on top
3gb ram
Snapdragon 820
16mp + 8mp + heart rate+laser focus sensor in the back
8mp front camera
Bottom firing speaker
USB type -C
Pressure sensor found
Finger print reader same like lgv10
Duel camera on the back
http://imgur.com/fWdOaLf http://imgur.com/fHdh1cP