OpenAI's YouTube video announces new features for ChatGPT, including video and screen sharing capabilities within Advanced Voice mode. This update allows users to conduct richer, more interactive conversations with ChatGPT, demonstrated through examples like a coffee-making tutorial and seeking help with a message. Additionally, the video introduces a special "Santa" mode, enabling users to converse with a virtual Santa Claus in real-time using voice and text. The rollout of these features will occur gradually over the next week across different platforms and subscription levels.