According to @Copilot on Twitter, Microsoft Copilot has introduced 'Eggnog Mode,' a seasonal AI feature designed to boost user engagement and enjoyment during the holidays. This update leverages advanced natural language processing to provide festive interactions, showcasing Copilot's flexibility and personalization capabilities. The move highlights how AI assistants can be tailored for specific occasions to increase user retention and create new business opportunities through differentiated user experiences (source: @Copilot, Dec 16, 2025).