WhatsApp has introduced major updates to enhance its calling experience across desktop and mobile. Key new features include screen sharing with audio for watching videos together, increasing video call capacity to 32 participants, and a speaker spotlight to easily identify who is speaking. Additionally, WhatsApp has improved audio/video quality, noise cancellation, and call reliability even on poor connections through technical upgrades like the MLow codec. These updates aim to revolutionize how users connect and interact on the platform.