The knowledge cutoff seems to be new, at least in the docs.
See this 25 day old screenshot of the docs which says knowledge cutoff April 2023 for the 0125 model
https://www.reddit.com/r/ChatGPT/comments/19fhb6h/new_gpt_4_...
This help article which was updated "this week" also still mentions April 2023
https://help.openai.com/en/articles/8555510-gpt-4-turbo-in-t...
And in the announcement for 0125 they didn't say anything about the knowledge cutoff change
https://openai.com/blog/new-embedding-models-and-api-updates