The last update for this project made on this page, dated from April 2022, mentioned that the Hard Rock would undertake the implementation of this project.
Now, according to the Hard Rock Hotels page itself, oficially posted about it:
https://www.hardrockhotels.com/news/hard-rock-international-commences-partnership-with-gek-terna-group-to-create-a-luxury-resort-and-casino-in-the-heart-of-the-athens-riviera-/
The project will now be called Hard Rock Hotel & Casino Athens, and is set to open in 2026.
Besides, the Chairman and CEO of GEK TERNA Group stated that the group, along with Hard Rock, are realizing a private investment of over 1 billion euros.
The development will bring a casino of just under 15,000 m2.