As part of a future upgrade, WhatsApp will allow users to pick a cover photo that will be shown in addition to their profile image. However, the functionality is currently under development just for Business accounts, and it is not currently scheduled to be made available to regular WhatsApp users.
However, there is no definite timetable for when the functionality will be made available to beta testers, but WhatsApp will make certain modifications to the Business profile settings as soon as it is made available to them.
The following is an example of what the future update may look like:
Users with business accounts may now upload a photo or snap a fresh one to use as their profile cover photo by clicking on the new camera icon.
Cover photo: When other users, including Standard account users, visit any Business account profile, they will be able to view the cover photo shown on the profile.
The feature upgrade will first be available for iOS users, but WhatsApp intends to make it available for Android users as well in the future.