Called ‘Read Later’, this feature on WhatsApp is an improvised version to the existing Archive Chats feature. ‘Read Later’ feature will allow users to send messages directly to the Read Later category. The users will also have an option to disable this feature in chat settings.
Moreover, Whatsapp also wants to reduce the interruption as the messages under the Read Later tab will not come up with any new notifications. This feature will be available to users in a few weeks.
Source :- msn.com