Did you saw US-Chinese design for their 6th gen fighter?
Or do you know what this coating is? View attachment 53291
There are technologies being developed which is beyond the current 5th gen definition.
So, this would be a wrong conclusion to say, all 6th gen fighters are just marketed 5th gen fighter With a fancy classification.
By the time Turkey would develop those technologies, instead of just shoving all of them into TFX, I believe Tusas will come up with a new generation platform with a new design. Sure, TFX will get some great upgrades, But definitely it wouldn’t make it on per with NGAD.
Of course, I haven't seen them, they are top-secret projects, but I have seen some concept art, but it is unclear if the actual fighter would resemble the concept art. If the art and statements are anything to go by, it seems that already existing 5th gen technology has matured in those planes, and very little has been added.
The new plane has been designed to fit with a doctrinal shift rather than seeming to take advantage of some new breakthrough technology that will lead fighters needing to be redesigned, thus creating a new class of fighter gen.
The rumours are it is a new type of stealth paint that uses chrome, which really isn't something that should lead to fighters being classified as a new generation.
The Tempest has vertical stabilizers which a typical 6th gen fighter is supposed to do away with.
I believe that the use of vertical stabilizers is because of Two main factors for this:
The first reason is the US and China are building their fighters while prioritising range, not having vertical stabilizers the objective is for the planes to be able to travel long distances. This is because the primary theatre the powers are interested in is located in the south china sea. The US can't rely on its aircraft carrier because of Chinese missiles as such, it is planning to use the island chains against china, thus the need for planes with greater range. the Tempest project wasn't built with the same requirements in mind, thus the use of Vertical Stabilizers. it is also because of this reason that the FCAS fighter is also depicted with vertical stabilizers.
the second reason is doctrinal the US seems to be moving away from dog fights to a network-oriented form of warfare that uses its planes as mobile missile boats/control platforms for its drones. while the British seem to be sticking to a more traditional role for their plane, thus fewer entheses on mobile command and more entheses on traditional fighter jet doctrine.