As a surviving candidate of the latest IODP 1.1, here are some scoops, tips and stats:
1) No more TEWT's: starting this year, TEWT's are no longer hard-assessed and are simply employed as teaching tools in helping us understand the estimate process. Instead, assessments have become purely practical; in addition to leading a hasty attack as per the old course format, EVERY candidate is now expected to successfully lead a fighting patrol (raid, ambush, deliberate attack or woods clearing, randomly assigned by the evaluating staff) and a defensive task (occupation, routine, relief in place or withdrawal).
2) Tips: cut down on gym time and start rucking; about a quarter of candidates got kicked out in the first couple weeks simply due to the fact they couldn't keep up during morning ruck marches. Many of them were seemingly well-prepared and fit to appear on fitness magazine covers, but ended up being practically useless when loaded down with radios and platoon weapons. Focus on cardio and muscle endurance, especially in the legs and the back. Also, try fattening up while you can, you WILL lose it all throughout the course.
3) Stats: the course started with approximately 120 candidates on 26 May 2014, less than 50 are currently remaining on week 11 out of 12. Most (myself included) have already passed all their assessments (hasty, patrol and defensive), with the remaining few expected to pass theirs assessments during the Culmination Exercice in the last week of the course.
Good luck!