I think Apple is out of the standalone display business, if you listen carefully to what he was saying, half the time he referred to it as an iMac and half the time as a display, then he said 'and we're even throwing in a computer inside' - that suggests to me that they are ditching standalone displays. It's no huge loss because you could always buy an entry level 27 inch 5K iMac or one of the many LG displays, plus they know that there are going to be huge choice in 4K displays by this time next year. I think the Thunderbolt display is a discontinued product.