There are some messages that are only relevant for a limited time. Perhaps there is a meeting or a deadline approaching. You can pin a chat, but you should only keep it up for a limited time. Whatsapp allows you to set it to expire after a certain period of time.
According to the screenshot provided by WABInfo, there will be some restrictions. To begin, you will be able to set your chat to expire after 24 hours, 3 days, or 30 days. That’s helpful, but having only three options is limiting. Hopefully, the company will add more options, including the ability to set your own custom duration.