Norwegian announces $69 flights between UK and US

Norwegian has once again teased us with announcements of under-£60 one-way flights between Edinburgh and New York,
allegedly starting June 2017. Is it for real? They have been talking about it for many months. I'm on the edge of my seat!

Their flights currently start as low as $110 between Europe and the US, and more like $150 or $250 from London. Checked luggage and food are extra, but on the whole, flying Norwegian is a pretty pleasant experience.