Im not sure whay new features will it have or whats the hype about it? Any mind explaining
From what I've experienced from using the leaked ICS builds, the only cool features that I can think of are:
1. Settings button in the Notification Bar
2. The new Recent Apps menu (When you hold "Home") looks pretty cool
3. The new stock browser is awesome
4. The stock launcher (If you switch to the stock launcher from touchwiz) is awesome and really looks like stock ics
5. The settings menu is better
6. Google Chrome is also pretty awesome and FAST!! (Even though it doesn't come with the update, it only works for ICS)
7. Face Unlock is a really cool feature (Unlock your phone with facial recognition from the Front Cam)
8. All of the Google apps are way awesome looking now
9. Voice Actions are better
10. On TouchWiz the home screens scroll infinitely
11. On stock ICS launcher the folder making is easy & efficient (You'll understand if you watch videos on 4.0)
12. In the notification bar if you want to clear 1 notification you can swipe it to the right to kill it. (Same with tasks/recent apps and Tabs in the browser)
That's about the only things I can think of right now. I'm pretty happy with ICS some apps have bugged on me a little because they weren't optimized for ICS but besides that everything has been as smooth as 2.3.6. The stock ICS launcher is my favorite part of it though. I liked TouchWiz on 2.3 but I like the stock ICS launcher much more.