Google used same sensor for 4 generations and still was the best camera. Samsung has quite good and balanced lens and sensor block, why bother changing anything in the age of computational photography, when software changes give the most result.
The Galaxy S24, Galaxy S24 Plus and Galaxy S24 Ultra will remain Samsung's current flagship candybar smartphones for a while yet. Nonetheless, new reports suggest that the company has already locked in camera specifications for the Galaxy S25, Galaxy S25 Plus and Galaxy S25 Ultra ahead of mass production later this year.