Who has a secret iPhone killer project? Google? Samsung? Amazon? Facebook? Chinese knockoff makers?
Nope. Apple. What will replace iPhone?
Add sunglasses to the mix, and you get a definite maybe. Glasses that perform like an iPhone display is a different matter, but look how Apple handled Watch. At first, Watch was interesting but mostly boring, and useful– not as much as we hoped. Look around. Watch is ubiquitous now.
I expect Apple Glasses to launch and work much the same way. First, it needs an iPhone nearby. Second, it will be like Watch in that it is more convenient to use than digging an iPhone out of a pocket to use. Finally, it will become a standalone product.
When? Maybe next year. Or the year after.