GPT-4 was announced on March 14, 2023. The corresponding release paper (technical report) references GPT-4 as a "large multimodal model (accepting image and text inputs, emitting text outputs)".

However, currently both the API and the UI playground version of GPT-4 only accept text inputs with image input "coming later".

If OpenAI has not released it by the end of April 2024, then new options will be added accordingly.

November 30th 2022 is the chatGPT release date. If they don’t release it before then an anniversary update would be fitting. GPT-4 itself was released in March, 2023, so an anniversary update to that is also possible, though quite delayed.

For all the end of the month scenarios, timezone: PT will be considered.