To voice his displeasure, he and some of the development team from Ubisoft Montpellier were seen protesting the game's delay. The image you see above (courtesy of Eurogamer) shows Ancel and the team holding a poster that reads: "Sortez nous Rayman. Soutient a Ubi Montpellier," which translates to: "Release Rayman. Support Ubisoft Montpelier."
The game was originally supposed to release on February 26th for the Wii U, but last week, Ubisoft announced that the game was being delayed to September, at which point it would release on the Xbox 360 and PS3 as well.