Over the years, a lot of scam WhatsApp mass messages claimed the service would imminently become paid. That hasn't happened, obviously, and still won't - the core service will remain free. However, WhatsApp is now rumored to be soon introducing a premium tier.This will be called WhatsApp Plus. It's said to offer several additional customization options to change the app theme, app icon, and accent colors, including 14 new icons and multiple color choices and interface elements.Additionally, it will let you pin up to 20 chats, instead of the 3 that are now supported. You will also...