The main changes on the new CCIE R&S v4.0 certifications standards are:
1. The addition of MPLS/VPN, EIGRPv6 and the emphasis on troubleshooting.
2. The addition of a separated 2 hours troubleshooting section to the exam.
We did not remove any topics from the syllabus and we will cover the certification standards (aka blueprint) through 3 sections:
1. Open Ended Questions: up to 30 minutes.
2. Troubleshooting: up to 2 hours.
3. Configuration: up to 5 1/2 hours.
You can find more detailed information on the CCIE R&S v4.0 at
https://cisco.hosted.jivesoftware.com/docs/DOC-4605
Very Cool Stuff, MORE TO LEARN, MORE TO HAVE FUN
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Update:
Replied by: kronos_13 – none – May 24, 2009, 11:14pm PST
hi Maurilio Gorito.
I would really apreciate a more Inside View of the new Troubleshooting Section in the CCIE R&S 4.0 Revision.
Thank you in advacne.
Replied by: 
mgorito – CISCO SYSTEMS – May 26, 2009, 10:20pm PST

Hi,
The Troubleshooting section will have a maximum of 2 hours. The candidate will be presented a series of questions or ‘trouble tickets’ for a given scenario or topology. The referred topology will pre-configured.
Based on the information provided such as IP addressing diagrams, IGP routing diagrams, and so on you will work to identify and fix the issues. You will be given points for working scenarios.
Regards,
Maurilio
Update#2:
Hello,
During the lab exam you will have access to the documentation online at http://www.cisco.com/web/psa/products/index.html.
Regards,
Maurilio
note:
time to stat Being Familiar to the Products index