All Stickers Packs have received a server side update
According to WABetaInfo, all Stickers Packs available on WhatsApp have received a server-side update. As of now, the reasons for the update are actually unknown but rumors suggest the company is working to enable animated stickers.
You can update all your sticker packs by going to Chat > Stickers button > Tap on + icon and then on "UPDATE".
WhatsApp is also working on a new 'Disappearing Messages' feature
Separately, WhatsApp is also working to introduce a new "Delete Messages" feature (also referred to as "Disappearing Messages") that automatically deletes sent messages after a pre-determined time period.
However, contrary to earlier reports, popular tipster WABetaInfo has said that the feature is being offered as a cleaning tool for group chats and it won't be available for individual users.
Admins will have five time intervals to choose from
As per reports, admins will get five options to set the timer for "Delete Messages": 1 hour, 1 day, 1 week, 1 month, and 1 year. If an admin selects the 1-hour option, every message sent in that particular chat will disappear after an hour.