LG officially launched its first 4K OLED TV, the 65" 65EC9700 in the US - and it will start shipping in October 2014. The official price is $10,000 - but the real price will be lower. Cleveland Plasma offers it for pre-order for $6,250 for example. The 77" 77EC9800, which will launch in November through "select retailers" has an official price of $25,000.
It's actually weird how way out of touch are LG's official prices for those OLED TVs. The 55EC9300 55" FHD model is still listed as $6,999 while it is being offered for $3,499. The 2013 model (55EA9800) is listed at $8,999 (yes, higher than the new model!) while prices are usually below $3,000.
LG's 65EC9700, offers a 65" curved panel, 4K resolution (3840x2160), LG's High Dynamic Range (HDR) algorithm, the True 4K Engine Pro (to upscale SD, HD and FHD content to 4K) and support for H.264 and HEVC H.265 formats (30p and 60p). The TV also supports automatic color temperature control for individual pixels via LG's Color Refiner.