Earlier this month LG let the G3 Stylus slip out in an ad, though at the time we weren't exactly sure what the device was. Now we know, because LG made it official. Spoiler: it's not as cool as you hoped. I promise.
So the G3 Stylus looks like a G3 with a stylus, and it packs some of the features that makes the G3 cool, but it's not a G3 with a stylus.