“For the last several weeks we've displayed a notification in WhatsApp providing more information about the update. After giving everyone time to review, we're continuing to remind those who haven’t had the chance to do so to review and accept. After a period of several weeks, the reminder people receive will eventually become persistent,” as per the WhatsApp FAQ page.
What is changing?
1- Users will be able to talk to more businesses on WhatsApp to get things done faster compared to phone or email. This is completely optional. Users can block or remove them from their contact list.
2- More clarity is provided on how WhatsApp collect, share and use data. Also, the layout has been simplified to make it easier for users to navigate.
What is not changing?
1- The privacy and security of the personal chats of the users with their family and friends will never change.
2- The users can choose to share their number with a business or not and can block a business anytime.
3- The assent to the new Terms of Service does not expand WhatsApp’s ability to share user data with its parent company Facebook.