Today we are extremely happy to announce the release of Unity 2.5. For the first time Unity development is now available for use on both Mac OS X and Windows! True cross-platform development with Unity has now been realized. This has been an enormous project that has taken well over a year to complete, it’s a release that we’re very proud of having accomplished. What’s more is that during this effort we’ve also nearly doubled in size as a company and so there is a lot more on the way, it’s going to be an exciting year!
Windows Editor Support
Unity 2.5 adds full support for Windows Vista and XP with full feature parity and interoperability with Mac OS X. The Unity editor has been rebuilt to look, feel and function identically on both operating systems, each running the same underlying engine. The best part? Unity on either platform can build games for either platform!
Tabbed Interface
We took cues from the best designed applications, and the rewritten editor has received dozens of improvements. The most visible change is the tabbed interface, where every part of the interface can be moved, undocked to a secondary monitor, and even stacked to achieve logical grouping.
Completely Customizable Editor
UnityGUI, Unity’s own GUI creation system, now powers the entire editor and allows you to integrate your own unique level design tools, AI control tools, debugging tools, difficulty tuning tools, or anything else you need to optimize your workflows. Over 130 new API entry points enable you to create specialized, customized editor tools and build them into the existing Editor interface.
And more!
Of course there’s more, but instead of sharing it all here I’d like to suggest that you take a look at the following URL on our website for more information:
http://unity3d.com/unity/whats-new/unity-2.5
Of course if you’re just itching to download the new build then go for it!
Mac OS X: http://unity3d.com/unity/unity.dmg
Windows: http://unity3d.com/unity/UnitySetup.exe
Ready? Set? GO! 
