Asset bundle pro or free?

Is asset bundle still a pro-only feature?
I do not see it in documentation but unable to build Assetbundle for ios using unity 4.6 pro + ios free ?

http://docs.unity3d.com/Manual/AssetBundlesIntro.html

Can I build/use assetbundles with 5.0 free?

 

Yes. All engine features are in the personal version.

 

What about unity 4? I still cannot build/use assetbunles in unity pro+ios free for ios platform?

Is it only from Unity 5.0 onwards?

 

Yes. Nothing is changed for 4.x.

 

thank you, upgrading to 5.0 for asset bundles