In brief, below are the highlights for same:
• PPP over Ethernet (PPPoE)
• Performance Routing (Cisco PfR)
• Optimized Edge Routing (Cisco OER)
• MPLS Label Switching
• MPLS Layer3 VPN
• MPLS VRF-Lite
• Interdomain Multicast Routing
• IPv6 Multicast support
• Multiprotocol BGP (MBGP)
• Zone-Based Firewall
• Control Plane Policing (CoPP)
• Intrusion Prevention (IPS)
• Gateway Load Balancing Protocol (GLBP)
• Embedded Event Manager (EEM)
• Concept of “Optimize the Network”
If you first look at them, you might get heartburns! ;) But latter one should find peace with it.
One more important comments that I saw from M/s Laura O (an official from Cisco) is,"From a Cisco program perspective, I just want to add that one way we've made room for all the new material, is to preconfigure some of the basic routing and switching in the Configuration section of the lab. This aligns well with what actual network experts encounter--the basics are performed by others, so they can concentrate on the more advanced configuration or problem resolution tasks."
So gone are the days, where we candidates were suppose to not only wire the rack but we no longer might need to type, router ospf 1 follow it up by the network 0.0.0.0 0.0.0.0 area 0 command. ;)
Or in other terms, I think v4 is as close as possible to the real world ..hey, after all CCIE is meant for real experts ..init?!