The Worldwide Developer's Conference (WWDC) of 2023 is already touted to go down in history as the event during which Apple's first-gen VR/AR headset is unleashed. However, the latest version of iOS is now also projected to vie for the spotlight by unlocking app sideloading on iPhones for the first time. The Conference is also now rumored to introduce iPadOS optimized for OLED and watchOS optimized for an underwhelming hardware upgrade.