Ark 2 is now set to come out in 2028, and it may not have as much Vin Diesel as we were expecting: After years of delays, his involvement is 'an open question'

All did not go to plan, and Studio Wildcard is now aiming to get Ark 2 out the door sometime in 2028, according to an Epic Games report.
TechRaptor

Ark 2 Isn't Coming Until 2028, Studio Wildcard Says

Studio Wildcard says that it's probably going to be a good while before you can get your hands on Ark 2, but there'll be a little teaser for it in Ark: Survival Ascended.