windowscentral[.]com/software-apps/windows-11/windows-11-version-23h2-new-features-release-date-changelog-2023-update
windowscentral[.]com/software-apps/windows-11/is-your-device-getting-the-windows-11-2023-update-on-september-26-2023
neowin[.]net/news/microsoft-releases-windows-11-kb5030310-build-226212361-moment-4-update/
neowin[.]]net/news/windows-11-moment-4-update-is-now-available-for-download/
The update is now available if you check for updates. You may not see all of the new Windows features initially -- they're all installed, but some portion is turned off until Microsoft activates them in the future. This is supposed to allow Microsoft to hold back or even revert changes based on compatibility issues with different hardware and software that show up in the telemetry data Win11 sends home. If you flip the switch on the Windows Update page to Get the latest updates... however, you should get most if not all the new features turned on. Caution -- when that switch is turned on Windows will automatically install the 2nd, optional update every month, so in the future you might want to turn it back off if you don't want to be bothered. The actual update to Win11 23H2 later this year *may* just turn on any remaining new features that haven't been activated yet, and increase the Windows version number, but there aren't many [& AFAIK no official] details. Win11 22H2 shows version 22621.2361 after the update -- 23H2's version = 22631.2261.
A Win11 23H2 ISO is available to biz and Preview Version Insiders -- if you're enrolled as an Insider for any channel you can download it after logging into the Insider site. As expected it will not run to upgrade Win11 if the hardware requirements are not met. After mounting the ISO I copied the setup files and replaced Resources\ appraiserres.dll with a copy from Win10 1809 & it worked fine to upgrade a copy of Win11 in a non-hardware-compliant VM -- this was one of the first hacks I came across when Win11 was fairly new, and I just hung onto that copy of appraiserres.dll, but I've read of people just renaming a blank .txt file and that is supposed to work. And AFAIK this is the only way to upgrade Win11 versions prior to 22H2 on non-complaint hardware. If it's already running 22H2 OTOH today's update should install just fine.
Today's update to *almost 23H2* appears to add 2GB to the Windows installation based on my hardware compliant Win11 VM -- I haven't done an image backup of my regular copy of Win11 yet, so that VM's all I have to go by. A VM's installed OS is stored on a Virtual Hard Disk [VHD], which is a single file that when mounted acts / behaves like a physical hard disk. A VHD may be a static size, so a VHD with 1GB of storage uses a single file that is about 1GB in size. Or a VHD may be dynamic, increasing in size as needed -- a 1GB dynamically expanding VHD might take up 5 or 6 MB initially, growing as you add files to it, up to the maximum of 1GB. I use dynamically expanding VHDs for my VMs, and after an update like today I shrink them back down, eliminating any free space [it's called compacting]. After today's update compacting the VHD resulted in a file that was just a tad over 2GB larger than the [compacted] VHD after October's Patch Tuesday.
I'm terrible when it comes to Windows appearance &/or style -- far as I'm concerned Windows exists solely to run software, so I could care less about stuff like windows having rounded or square corners. So to be honest with you the only change I noticed after the update was another icon on the Taskbar for Copilot. I'm sure you can find rave reviews for whatever changes in File Explorer etc. if that interests you. The only functional changes I've seen so far is a slightly different GUI for Disk Mgr., and a notice in Notepad that it will now save contents automatically, and open where you left off if closed. Settings got a few additions, but most are meh IMHO. If you are interested in experimenting with Microsoft's REFS file system, that's easier -- you can create what they call a dev drive in settings or with the Dev Home app Win11 offered to download & install. I *almost* took the plunge a week or two back when I replaced one of my conventional storage drives with an SSD, but from what I read on Microsoft's site, performance increases seemed to be mainly due to turning off Defender scanning for any dev drives. Then I read from a non-Microsoft site that REFS was versioned -- updated with Windows -- so there was a possibility that copies of Windows without the latest updates might not be able to read a REFS drive updated in the latest version of Windows.
Windows Store does have something new to appreciate -- on the Games tab there was an ad in the banner for Instant Games. These are so-called casual games that you can play right from their listing in the store, with no download or installation required.
neowin[.]net/news/instant-games-in-the-new-windows-11-update-is-just-about-what-it-sounds-like/
And for folks that are into typing on a command line, Terminal gets some love.
github[.]com/microsoft/terminal/releases