It's looking a ton more promising than the last time they showed it. Splinter Cell Chaos Theory and Splinter Cell 1 were in my top 10 games of last gen. SC: Pandora Tomorrow was alright (the online was awesome) and Double Agent nearly killed the series for me. I just did not like it at all. When they showed the old emo style Conviction in 2007 I had all but lost interest. This definitely put it near the top of my games radar again.
The in game story-telling stuff was really well done and while I'm not a fan of the queue-ing of attacks, I can see how it would work in a game like this. It's there, but I don't plan on using it. Some of the animations (specifically when he's hanging from the ledge on the side of the building and going by all the windows) looked too robotic but overall the game looks brilliant. Sam Fischer's model was very very detailed I found. To answer your OP: Tons of people (including myself) are very very excited! ^_^