#13800: Rayman Legends Wii U trailer leaked
#13812: Wii U DRC appears identical in Rayman trailer compared to in E3 2011
#13843: Mystery dark oval resembling Wii Remote IR camera now on DRC?
#13859: Ideaman, "This is NOT the final & definitive controller. The one used in this trailer isn't the 'updated' model."
#14026: cvg mistakes devkit DRC connector for sign that controller won't be wireless
#14055: giflet from Rayman trailer showing NFC in action
#14143: Info recap: "four confirmed Ubisoft titles
Assassin's Creed III
Killer Freaks from Outer Space
Ghost Recon Online
Rayman Legends"
#14221: Miyamoto interview from the Guardian
#14406: Project CARS - Wii U-specific details
#14430: Project CARS leaked document screenshots
Also lots of actual speculation concerning DRC gameplay ideas and NFC concepts.
There's an explanation for that
here