Apple discontinuing its 27-inch Thunderbolt Display
Apple has announced that its 27-inch WQHD Thunderbolt Display (2560 x 1440) has now reached its end of life and will no longer be produced. What's left of the inventory is still being sold as of this writing, but heavy discounts are still nowhere to be seen. At present, users can purchase a Thunderbolt Display from the Apple store for about 940 to 1150 Euros. depending on region.
There were rumors even before the Worldwide Developer Conference (WWDC) about Apple launching a successor to its current monitor lineup with 5K resolution panels and integrated GPUs in order to be compatible with weaker MacBooks. Apple has yet to make any concrete announcements on the matter, but may have something in store for an announcement this Fall. While unlikely, it's possible that Apple may decide to exit the market for external displays completely.
The current crop of 27-inch Apple iMac products are equipped with 5K panels, though these are more akin to an AIO than to an external display.