WhatsApp has introduced a new feature called 'Message Drafts' that automatically saves unfinished messages as drafts, reducing the chance of losing or forgetting them. The feature marks conversations with a green 'Draft' label in the chat list and moves them to the top for convenience. This update aligns WhatsApp with competitors like Telegram and Google Messages. WhatsApp has also introduced other improvements, including 'Custom Lists' for organizing chats and the development of usernames for account access across devices. The app has also enhanced privacy settings and added features for extra security.