Apple has released the first developer beta of macOS Big Sur 11.0.1, even though macOS 11 Big Sur has not yet even been released to the public. This comes as rumors about a potential Apple event circulate for sometime in November.

Two weeks ago, Apple released macOS 11 Big Sur beta 10 to developers, continuing its focus on making bug fixes and performance improvements to the operating system ahead of its general release.

Previous releases of Mac OS X and OS X were named after cats and Craig Federighi acknowledged the 'dwindling supply' during the WWDC 2013 keynote address.He also concluded that 'Sea Lion' would be a 'dead end' and announced Apple's intention to begin using California landmarks for at least the next 10 years, beginning with OS X 10.9 “Mavericks”. Remove the watchOS 7 Beta Software Profile. To stop receiving the watchOS public betas, go to the Apple Watch app on your paired iPhone, tap the My Watch tab, then go to General Profiles and tap the watchOS 7 Beta Software Profile that appears. Tap Remove Profile. If asked, enter your device passcode, then tap Remove. If so, this would be the only true 64-bit Mac OS X system that is bootable on a G5 Mac. From what I gather, although some 64-bit support exists in Tiger and especially Leo, their kernels still ran in '32-bit mode' even on 64-bit hardware (both PPC and Intel). Just a stray thought. OS X Mountain Lion; Mac OS X v10.7 Lion; Mac OS X v10.6 Snow Leopard; Mac OS X v10.5 Leopard; Mac OS X v10.4 Tiger; Mac OS X v10.3 and earlier; Mac OS X Technologies; Classic Mac OS (OS9, OS8 & System 7) Photos for Mac; QuickTime; Safari; Front Row.

Apple is rumored to have a special event planned for November 17, where it could introduce its first Apple Silicon Mac. One likely possibility is that Apple is holding the public release of macOS Big Sur 11.0 until Apple Silicon, similar to what it did with iOS 14.1 earlier this month, which could help prevent leaks.

macOS 11 Big Sur is a massive update for the Mac, including a completely redesigned interface, an all-new Messages application, an all-new Control Center and Notification Center, and much more. You can check out the full coverage of 9to5Mac on what’s new in macOS Big Sur:

We’re still digging in to see what’s new in the first macOS Big Sur 11.0.1 beta. Developers can update to the beta by heading to the System Preferences application, then looking for the Software Update option.

If you spot any changes in macOS Big Sur 11.0.1, let us know in the comments below or on Twitter @9to5Mac. It’s likely that the update focuses on bug fixes and performance improvements for now.

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Is your Mac up to date with the latest version of the Mac operating system? Is it using the version required by a product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.

If your macOS isn't up to date, you may be able to update to a later version.

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Which macOS version is installed?

From the Apple menu  in the corner of your screen, choose About This Mac. You should see the macOS name, such as macOS Big Sur, followed by its version number. If you need to know the build number as well, click the version number to see it.

Which macOS version is the latest?

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These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Big Sur. As updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.

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If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.