Interesting news from lemans.org about how the rules will be regarding hybrids.
Essentially, between "braking zones" the cars will be allowed to use 500 kJ of energy, to remove the possibility of holding down the boost button through the Mulssanne Straight I would imagine as well as costs.
http://www.lemans.org/en/races/24h/upda ... _7185.html
At the end it mentions the different rules regarding using the "ERS" between the Toyotas (rear electric) and the Audis (front electric) where the Audis need to be above a certain speed to use their ERS (much like the use of KERS in starts in F1). I am curious as to how this will affect the performance of the hybrids with these two different layouts, as Spa showed the E-tron's effectiveness in the wet, but perhaps the ever-presence of ERS for the Toyotas will enhance acceleration out of the corners.
Exciting stuff as the time draws closer and closer.