Hard to say, a lot of conflicting info out there. A press release doesn't mean a retail release. Original guesstimates put it around February 2018 for retail release. But if Intel wants to push it forward to compete with Ryzen 5 sales that would make some sense.
Usually you see ultrabook processors before desktop, but this time we have a SKU list and a new chipset announced already. We'll see in a week I suppose.
I was excited about it, but since they are saying a new chipset for the new chips, eh, I'll just hold out for a few more generations.