Broadcom has been referring to its 802.11ac chips as 5G WiFi solutions for almost a year now.
Now that there are rumours of Apple using these chips though, we should all just blame them for it. We'll also skip over the fact that the article only refers to the Mac lineup getting the chips initially, rather than iPhones, which aren't mentioned anywhere in it. Bleat on, anti-Apple sheeple.
Not that I'm pro or anti Apple, no dog in the fight, but I did notice that these are for Macs and not iPhones.
Of course, the populace at large aren't hip to all the cool techy lingo, and if they hear 5G they will think phone.