So where are we on this? i hear people talking of penalties after they've used 4 PU. i've not heard anyone talk about this 5th power unit rule. did it happen?
There is this article from the weekend (no idea how reliable this site is though and I've not seen any other updates about the extra engine)
http://autoweek.com/...being-discussed
“My understanding from the meeting is that a proposal will be put together by the engine manufacturers,” Force India's Bob Fernley said. “And once we get that, it will go to the next strategy group meeting in the middle of May.