This in a NT IPA and will last until the end of the financial year (Match 2010) or until you change employers, whichever comes first.
A NT IPA has nothing to do with ED. Once it has been implemented and the OR has finished with your case then you 'may' be eligible for ED.
Don't forget that ED is a bonus and you should be prepared for AD. 12 months BR is not a long time to completely wipe out all debts and have a fresh start in your financial life.