I don't believe those rumors. The true is that Audi got a hell of a luck to win this year in lemans, and 1 -2 -3... 1 in 50 years... they gave Peugeot the upper hand in torque, 6 power strokes per rev of their V12, against 5 power strokes per rev of his V10... and clearly they were not a match to Peugeot.
Hard to believe they risk to make the same mistake again.