There has been some talk on the twitter-verse and at Cisco Live around some of the changes that Cisco is making to the CCIE/DE written and lab policies.  Last month they posted those changes to their Certification Exam Policies website to let everyone know and read.  The ones that are key to CCIE/DE candidates (and some will be effective August 2, 2014) are:
Written:

• Candidates who fail the CCIE/DE written must want 15 calendar days, beginning the day after the fail, before retaking the exam
• Once passed, you cannot retake the same written exam within 180 days
• Candidates may attempt the CCIE/DE written exam up to four (4) times per rolling calendar year.

Lab (here is the big one):

• Candidate must wait 30 days between CCIE lab attempts (30 days starts the day after the failed attempt)
• For your 1^st  attempt there is no wait time.
• For your 2^nd  attempt, there is a 30 day wait time
• For your 3^rd, 4^th, and 5^th attempt, there is a 90 wait time between each
• For your 6^th , 7^th  and onward, the there is a 180 day wait time between each.