Unity 3.4.2

https://unity3d.com/unity/whats-new/unity-3.4.2

• Fixes
  • Editor
  • Android
  • iOS
  • Monodevelop
  • Webplayer

Unity 3.4.1

https://unity3d.com/unity/whats-new/unity-3.4.1

• Features and improvements
• Important future changes
• Fixes
  • Editor
  • Runtime
  • Standard assets
  • Javascript
  • MonoDevelop

Unity 3.4

https://unity3d.com/unity/whats-new/unity-3.4

• Features
• Editor
  • Improvements
  • Fixes
• Graphics
  • Improvements
  • Fixes
• Audio
  • Fixes
• Unity iOS
  • Improvements
  • Fixes
• Known Issues
• Unity Android
  • Improvements
  • Fixes
• Other Improvements
• Other Fixes
• JavaScript upgrade guide