Macworld In just about a month, Apple will unveil iPadOS 17 during its WWDC keynote, and we’ll once again be looking for signs that the iPad Pro is turning into the high-end productivity device we all want it to be. And based on the latest round of rumors, it might actually happen. According to Analyst941 on Twitter, Apple is preparing some major upgrades to Stage Manager in iPadOS 17 that will bring several enhancements to the multitasking interface. Among the new features expected are: • Support for webcams built into external monitors. • Source settings for audio output. • Simultaneous audio/video streams. • Dock resizing on an external display. • The ability to run an external display while the iPad…