WhatsApp is not the known for new innovations in the messenger market but the developers always come up with some smaller tweaks to enhance the messaging experience. WhatsApp has recently brought back the speed controls for voice messages and also implemented the enhancements to the disappearing messages. Now WhatsApp is making it easier to add stickers into your chats.
You can search for the required stickers when you tap on the emoji/sticker button located on the left side in the compose box. WhatsApp will now give you sticker suggestions based on the first word you write in the text box. When there are suggestions the emoji shortcut will light up in different color. Once you tap on it the keyboard will disappear thus making way for the selection of the stickers from your sticker packs.
WABetInfo has managed to activate the feature in the upcoming version of WhatsApp so it is not live for anyone at the moment. It also works only for the 1st party sticker sets but it has been confirmed with 3rd party developers that support can be added easily by them when they associate emoji with stickers.