LG apparently sent its upcoming 2017 OLED TV range to get certified by the WiFi Alliance, and the model names are now available on the website. Seems like LG is using a simple naming scheme - switching the 6 in the 2016 models to 7 for 2017: so we have the B7, C7, E7 and G7.
The only TV that seems new is the OLEDW7 series - the OLED65W7 and OLED77W7. It may mean anything, but FlatPanelHD speculates that this may be LG's Wallpaper OLED TVs. In May 2015 LG Display demonstrated those 0.97 mm thick 55" OLED panels that stick to the wall using magnets. The entire 55" OLED panel weighs only 1.9 Kg.
This is obviously just a speculation by FPH based on the W in the name, but it's a good bet as any. It'll be great to see LG release these ultra-thin TV, and it'll be great to see the market reaction to those beautiful TVs. It will be interesting, too, to see how LG prices these - probably these may be even pricier than the signature G7 series.