A bunch of new stuff in SMB 3.0

• SMB for Server Applications
• Active file sharing with SMB Scale Out
• Scalable, fast, and efficient storage access with SMB Direct
• Fast data transfers and network fault tolerance with SMB Multichannel
• Transparent Failover and node fault tolerance with SMB
• VSS for SMB file shares
• Secure data transfer with SMB encryption
• Faster access to documents over high latency networks with SMB Directory Leasing
• SMB Ecosystem

Read the rest here