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macOS Catalina (version 10.15) is the sixteenth major release of macOS, Apple Inc.'s desktop operating system for Macintosh computers. It is the successor to macOS Mojave and was announced at WWDC 2019 on June 3, 2019 and released to the public on October 7, 2019.
July 20, 2011: The release of Mac OS X 10.7 Lion formally ended Apple's support of PowerPC-based software. August 7, 2011: PowerPC hardware reached "vintage" status having been discontinued five years prior, ending most of Apple's service and parts support for PowerPC hardware.
This is a list of built-in apps and system components developed by Apple Inc. for macOS that come bundled by default or are installed through a system update. Many of the default programs found on macOS have counterparts on Apple's other operating systems, most often on iOS and iPadOS.
UniBeast was updated for macOS Catalina support, but there has not yet been a MultiBeast release for Catalina. [51] For the first public stable release of macOS 10.15, AMD patches were also released, allowing the booting of macOS Catalina on AMD CPU systems. [52] A new bootloader began to emerge during this time, called OpenCore.
Apple has modified the C compiler toolchain that is used to build iBoot in order to advance memory safety since iOS 14.This advancement is designed to mitigate entire classes of common memory corruption vulnerabilities such as buffer overflows, heap exploitations, type confusion vulnerabilities, and use-after-free attacks.
Rosetta is a dynamic binary translator developed by Apple Inc. for macOS, an application compatibility layer between different instruction set architectures.It enables a transition to newer hardware, by automatically translating software.
macOS 10.15 Catalina was released on October 7, 2019. [229] Updates included enhanced voice control, and bundled apps for music, video, and podcasts that together replace the functions of iTunes, and the ability to use an iPad as an external monitor. Catalina officially dropped support for 32-bit applications. [230]
A few years later, in 2020, with the release of macOS Big Sur, the first component of the version number was incremented from 10 to 11, so Big Sur's initial release's version number was 11.0 instead of 10.16, making the version numbers of macOS behave the way the version numbers of Apple's other operating systems do. [37]