WhatsApp beta tests Quick Quotes feature on Android beta 2.16.118
The reply will hit the screen with the original message on top of it. The name of the sender is printed in a color that matches his or her color used in group chats. Anyone involved in a WhatsApp chat can have their quote highlighted in this fashion, and those using "Quick Quote" can even use the new feature on their own quotes. Anyone who clicks on the attached reply will be sent to the part of the conversation where the original message was lifted from. The original message will be highlighted in blue for a brief time. This helps others understand the context of both the original quote and the reply.
It appears that the new Quick Quotes feature appears on the 2.16.118 beta of the messaging app. There are two ways to check it out now. You can become a beta tester by going to the Google Play Store and agreeing to test the latest WhatsApp beta version. Or, you can use APK Mirror to sideload the beta on your phone.
Become a WhatsApp beta tester by clicking on this Google Play Store link; Download version 2.116.118 of WhatsApp with APK Mirror