If I am not mistaken, a more detailed presentation of this ilustration is presented in the 'Türkiye Unmanned Aerial Vehicles Roadmap 2011-2030' document. So this roadmap is based on TAI's corporate strategy, which dates back maybe 15 years. Although there have been many differences in some areas over the years, the order of the systems and the dates of their emergence show that the master plan remains valid to a considerable extent.
Since this document was published in 2011 We always knew that the stealth flying wing armed drone would come in some way, but there were things that not went beyond speculation about when the project would start or if it had started. It was even completely forgotten for a while. Until Kotil's statement which he made suddenly. Things were going a little differently during Kotil's time, ANKA-3 was announced by him while it was still in the design office and before even the concept drawings were reflected in the press. I am the first person to open a thread about ANKA-3 in foreign forums, that's how I know it. We didn't even have any concept art to show. Kotil's press statements were never contain specific information, he liked to explain systems in a way that everyone could understand, and he also liked to make exciting. GM Demiroğlu, on the other hand, I think is closer to the military mentality, his statements are more cautious, and he is careful not to share too much.
Anyway, ANKA-4 or ANKA-X, whatever its code name will be, we know that TAI will come up with a much more agile and powered turbofan UCAV. The question of when is speculative for now, maybe tomorrow, maybe even sooner.
My personal opinion is that concept art will be leaked in 2025.