I have often stated that well-implemented memory tagging will be a game changer for memory corruptions. And it seems that with the next iPhone it's finally here: https://security.apple.com/blog/memory-integrity-enforcement/
Memory Integrity Enforcement: A complete vision for memory safety in Apple devices - Apple Security Research

Memory Integrity Enforcement (MIE) is the culmination of an unprecedented design and engineering effort spanning half a decade that combines the unique strengths of Apple silicon hardware with our advanced operating system security to provide industry-first, always-on memory safety protection across our devices — without compromising our best-in-class device performance. We believe Memory Integrity Enforcement represents the most significant upgrade to memory safety in the history of consumer operating systems.

Memory Integrity Enforcement: A complete vision for memory safety in Apple devices - Apple Security Research

@HalvarFlake what does this mean in practice?

Zero days and IOS specific malware are much harder to write??

So the security conscious should move to the new iPhones and iPads when they arrive???