OpenAI has reportedly updated the ChatGPT mobile application, with users noting changes in the user interface (UI) on both Android and iOS platforms. The updates include a new model selector positioned within the message box, enhancing accessibility for users. Additionally, users have observed the introduction of a 'today' label at the top of new chats, which some speculate could indicate improved memory capabilities. There are also indications that the coding tool within ChatGPT is being utilized more frequently than before, suggesting potential enhancements in its functionality. These updates have generated excitement among users, with discussions about the implications of these changes for the overall user experience.