In July 2015, a poster at the NeoGAF forums postul

In July 2015, a poster at the NeoGAF forums postulated something that sounded odd at the time: the PlayStation 4 has been 4K-compatible from the get-go. Even before 4K had arisen as a burgeoning standard, it was there, all along. User Jeff Rigby geeked out by analyzing things like motherboard schematics, exposed pins, and HDMI bandwidth ratings, and he concluded that everything on the hardware side was in place for a surprise 4K update. Sony just needed to push a necessary firmware update to comply with bandwidth and copy-protection standards.