1. WhatsApp is introducing a new status update feature similar to Instagram Notes, allowing users to share short text updates that can be seen by others in their chats and profiles.

2. The About status will appear at the top of one-on-one chats and can be replied to directly. It has a default expiration time of 24 hours but users can adjust this. Users can control the visibility of their status (private or more publicly visible).

3. The feature is being rolled out for mobile devices starting from this week, with potential improvements based on user adoption. At launch, it does not support videos or music sharing like Instagram Notes.