In a Q&A session with creative director Maxime Béland, Ubisoft confirmed that a demo for Splinter Cell: Conviction is coming. There was talk about one before the game was delayed (and delayed and delayed), but obviously it's still in the works.
"The number one question we've received is, 'is there going to be a demo on Conviction?' Yes, there will be one. I can't tell you what map or when it's going to be released yet. My lips are sealed," Béland said.