In my experience, these updates don't matter that much. For example, GPT-4 still uses Pydantic v1 syntax (which for the most part is deprecated) even though Pydantic v2 came in June 2023. the information regarding v1 is so much more in GPT-4's training data that "on average" it picks that instead of the new v2 syntax data.
This has been a major pain point for me, because GPT-4 constantly uses @validator, "const", "always", etc. features that don't work on v2.