HiSense (Australia) announced that it plans to introduce its first OLED TV in the first half of 2018. The company did not disclose any details beyond that announcement, though.

HiSense 2014 OLED TV prototype

Hisense has been demonstrating and promising OLED TVs for a long time (in 2014 the company demonstrated its first 55" OLED TV prototype, and in 2011 the company aimed to release a 15-inch OLED "TV"). But it's likely that now HiSense is indeed ready to release a real OLED TV to the market.