Sony's 2018 4K TVs keep the focus on OLED, HDR and Android

Last year Sony kicked off the year by adding OLED and HDR to its lineup, then later pushed Google's Assistant AI as an upgrade for its Android TV platform. In 2018 the company is sticking to those basics on its latest 4K TVs with a few tweaks. It will once again offer OLED TVs in 55- and 65-inch sizes, this time with an updated version of its technology that broadcasts sound directly from the display itself. Now dubbed "Acoustic Surface," this A8F series appears to pack the upgraded version of Crystal Sound that LG Display is showing off, with support for 3.1 channels of audio instead of the A1E's 2.1. There's no word yet on price, but last year's models launched at $5,000 and $6,500, and currently sell for around $3,000/$4,000.