As part of the reveal of their 2023 roadmap for ARK Survival Evolved, the team at Studio Wildcard revealed that ARK 2 - which was first revealed back in December 2020, will now release at the end of 2024, so 21 months from now.

So why the delay, well the team have released the reason why in the roadmap story, you can read part of it below.

So why the delay? Our goal is to make ARK 2 the best game it can be and provide a truly exceptional and rewarding experience for players. Unreal Engine 5 is incredibly new technology to us (and all developers), and we aim to use this cutting-edge tech to its fullest potential while creating a game with never-before-achieved scope at Studio Wildcard. As we learn more about the engine and develop the sequel, we have adapted our workflows and adjusted our pipelines to accommodate this new next-generation paradigm, and because of everything that involves, we need more time for development.
 

We sincerely apologize for this delay and genuinely appreciate your understanding. Your support and passion are vital to us, and we will continue to work intensively to deliver the ultimate next-gen dinosaur survival experience. With that in mind, we do not plan to showcase any gameplay/screenshots/videos of ARK 2 this year; however, we intend to keep you informed and engaged in the development process by regularly showcasing more ARK 2 assets in the months ahead, leading to our gameplay reveal next year.

The full statement and details on the roadmap can be found here, along with details about the remaster of the original game, the Switch roadmap and the enhanced mobile version.