Is ZimbraOSE+Zextras suite = ZNE Archiving & Discovery?

Hi,

I see that Zimbra archiving and discovery is not listed as a feature for OSE in the latest feature list for Version 8.0 downloaded from zimbra.com.

So, I am curious to know if Zextras plugs this gap in any manner. I see Zextras Backup, but I don't think that's the same as ZNE's archiving and discovery, right?

Thanks in advance.