Looks like Renault are going to return to Le Mans in the very near future.
They plan to use their 2014 engine in the LMP1 class and will also supply an engine and partner with Signatech in LMP2 class too.
Renault 2014 engine analysis:
http://www.racecar-engineering.com/articles/f1/renault-rs34-the-future-of-formula-1/
James Allison concludes Its going to be scary and exciting at the first test next year, the 2009 changes were a ripple compared to the Tsunami of 2014.
Hype!