WhatsApp is developing a profile cover photo feature for iOS users, allowing them to add a custom image above their profile picture, similar to social media platforms. This feature, previously hinted at for Android and already available for WhatsApp Business, is currently in beta testing on iOS. Users will be able to upload, take, or change their cover photo at any time. The rollout timeline for general availability remains unknown as WhatsApp continues to introduce other updates like member tags and custom event reminders.