What are key differences between CCIE Security V4 and CCIE Security V5 Lab Exams?

from exam point of view , 

in ccie security v4 we have only a lab to configure which has some troubleshooting too. whereas the ccie security v5 exam pattern is totally revised. 

now we have tshoot section ,diagnostics section and finally lab. 

From technology point of view ccie security lab exam is divided into 6 parts 

firewall ( new versions are introduced 9.x , asav is also there)

ips/ids,web security appliance , (we have ftd instead of ips/ids , we have new wsa as well as we have esa too)

vpn (ikev1 is completly done, we are now having ikev2 only for all the vpn variations )

layer 2,layer 3 security (not much changed but they are also not 15,x ios so any change in them will be there too)

aaa (ise ans acs both versions are revised)

wlc = new wlc  thats it