Thunderbolt is one of those technologies that never really took off. Five years ago, Apple added a Thunderbolt display to its lineup but now it's discontinuing the product without offering an alternative. There is still some supply left, but once everything is sold out customers will need to consider third-party options.
“We’re discontinuing the Apple Thunderbolt Display. It will be available through Apple.com, Apple’s retail stores and Apple Authorized Resellers while supplies last. There are a number of great third-party options available for Mac users,” said an Apple spokesperson in a statement given to TechCrunch.
There is still stock left, but once that stock runs out it will no longer be available. If you’re in the market for one either buy it on Apple.com now or try to score one at a third-party retailer.