When Apple’s new Lion OS X releases later this month, a new feature within the OS X client version will now allow multiple virtual copies to run on the same machine. This is a feature that was previously only enabled on the Mac OS X Server software edition.
The new EULA for Lion OS X 10.7 will now enable users to run one or two virtual Mac instances on each physical Mac using already existing virtualization software such as VirtualBox, Parallels, and Fusion.

Benefits for Developers
The new feature will be great for developers, now allowing them to run multiple Lion OS X environments for testing their applications and creations. This capability is particularly useful for developers who need to ensure their software works across different versions of the OS or in different configurations. By running multiple virtual instances, developers can simulate various environments without needing multiple physical machines.
For example, a developer working on a complex application can test how it performs on a clean installation of Lion OS X, while simultaneously running another instance with various other applications installed to check for compatibility issues. This flexibility can significantly speed up the development and testing process, leading to more robust and reliable software.
Implications of the Policy Change
The change in policy by Apple indicates how closely integrated Lion OS X and its OS X Server side add-on will be. When Lion OS X Server becomes an add-on pack available from the Apple Mac Store on release, it will simplify the process for users who need server capabilities without requiring a separate server edition. This move could potentially broaden the user base for OS X Server features, making them more accessible to small businesses and individual developers who might have found the separate server edition too costly or complex.
Additionally, this policy change could have broader implications for how Apple approaches virtualization and enterprise solutions. By allowing virtualization on the client version of OS X, Apple is acknowledging the growing importance of virtual environments in both development and production settings. This could pave the way for more advanced virtualization features in future OS X releases, further blurring the lines between client and server functionalities.
The new Golden Master version of OS X Lion 10.7 now includes the feature if you can’t wait until its released next week. This early access allows developers and tech enthusiasts to get a head start on exploring the new capabilities and preparing their systems for the official release.
The introduction of virtualization capabilities in the client version of Lion OS X 10.7 is a significant step forward for Apple. It not only enhances the flexibility and utility of the OS for developers but also signals a shift towards more integrated and accessible server functionalities. As virtualization continues to play a crucial role in modern computing, this move positions Apple to better meet the needs of its diverse user base.
Source: Mac Rumours
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