Google is developing a feature called "Pixel Besties" to consolidate conversations from various messaging applications into a single interface. It is expected to debut with the upcoming Pixel QPR update, with WhatsApp likely being the first third-party app to participate. The feature may be part of a dedicated application called "Pixel Relationship," which could include a home screen widget for easy access. Users will be able to curate a list of important contacts, and all interactions with designated "Pixel Besties" will be aggregated in one space. The latest beta version of WhatsApp suggests a central hub for this feature, supported by a new API for communication between apps. Initially, it will integrate data from Google Messages and WhatsApp, with potential future additions from other platforms like Messenger.