OpenAI has recently introduced a Christmas-themed update to ChatGPT, featuring a new voice mode with snowflake animations and a special 'SantaGPT' voice. This update comes amidst expectations for further significant releases from OpenAI before the end of December, including potential advancements like SORA, a multimodal model, enhanced image generation capabilities, and an expanded context window. However, the company's failure to acknowledge ChatGPT's birthday has left some users disappointed, with no official celebrations or announcements made on the occasion.