A 5,120x2,880-pixel image of an ocean wave that accompanies the upcoming OS X Mavericks is a strong hint that Apple is preparing its operating system for high-resolution iMacs and external monitors.

It's one of LG's most impressive displays of screen technology yet: a 55-inch OLED panel that's just 0.97mm thick and weighs just 1.9kg (4.1 pounds).