<!--
{
  "documentType" : "article",
  "framework" : "Updates",
  "identifier" : "/documentation/Updates/Virtualization",
  "metadataVersion" : "0.1.0",
  "role" : "article",
  "title" : "Virtualization updates"
}
-->

# Virtualization updates

Learn about important changes to Virtualization.

## Overview

Browse notable changes in <doc://com.apple.documentation/documentation/Virtualization>.

## June 2025

- Take advantage of more efficient storage utilization in virtual machine (VM) images using the Apple Sparse Image Format (ASIF). Its space-saving allocation results in a smaller disk footprint and optimized transfer for VM disk images with <doc://com.apple.documentation/documentation/Virtualization/VZDiskImageStorageDeviceAttachment>.
- Support vmnet custom network topologies to enable VM-to-VM communications based on a logical network with customized configuration.
- Easily discover a VM’s on-process <doc://com.apple.documentation/documentation/Virtualization/VZVirtualMachine/queue>
  using this new property on  <doc://com.apple.documentation/documentation/Virtualization/VZVirtualMachine>.

## June 2024

- Adopt nested VMs to run Linux VMs in virtualized Linux VM hosts.
- Allow emulated USB Mass Storage devices to attach to and detach from a running VM using Extensible Host Controller Interface (XHCI) controller hot-plug capabilities.
- Access iCloud from macOS 15 VMs.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)