update readme

Author: MattKiazyk

README.md

@@ -22,11 +22,14 @@ XcodesApp is now part of the `XcodesOrg` - [read more here](nextstep.md)
 - Just click a button to make a version active with `xcode-select`.
 - View release notes, OS compatibility, included SDKs and compilers from [Xcode Releases](https://xcodereleases.com).
 - Dark/Light Mode supported
+- Security Key Authentication supported 
 
 ## Platforms/Runtimes
 
 - Xcodes supports downloading the Apple runtimes via the app. Simply click on the Platform, and Xcodes will install automatically for you.
 
+**Note: iOS 18+, tvOS 18+, watchOS 11+, visionOS 2+ requires that Xcode 16.1 Beta 3+ be installed and active.** 
+
 ## Experiments
 
 - Thanks to the wonderful work of [https://github.com/saagarjha/unxip](https://github.com/saagarjha/unxip), turn on the experiment to increase your unxipping time by up to 70%! More can be found on his repo, but bugs, high memory may occur if used.
@@ -160,7 +163,8 @@ popd
 # Attach the zip that was created in the Product directory to the release
 # Publish the release
 
-# Update the [Homebrew Cask](https://github.com/RobotsAndPencils/homebrew-cask/blob/master/Casks/xcodes.rb).
+shasum -a 256 xcodes.zip
+# Update the [Homebrew Cask](https://github.com/XcodesOrg/homebrew-cask/blob/master/Casks/x/xcodes.rb).
 ```
 </details>