Stoey,
I do not have a direct link however it is happening. It has been communicated through a number of channels (mainly flight schools) and is also now stated in the IR providers Pre Reqs.
From Bond :
"If your application for the multi engine type rating, including evidence of having complied with all of the requirements for that rating, is not received by the CAA before 15th September 2012, it may not be possible for the CAA to grant the rating until you have 70 hours as pilot in command of helicopters."
LZ