Im pretty excited about the new storage features that will be builtin.
Pooling
Lite Data Tiering
Deduplication
Journaling and enhanced integrity checking
http://blogs.technet.com/b/server-cloud/archive/2011/11/23/windows-8-platform-storage-part-1.aspx
I've been waiting for MS to release some really good NAS features. I run an all Windows shop. Honestly I dont like having this one random *nix NAS.