They start it off right!
Everything is great about this issue and I'm not just saying that because it's the start to an exciting new arc that I've been waiting for since I started seeing ads for it when I started reading X-Books a few months ago. It starts off nice and slowly. As you've seen in numerous previews, Scott and Logan are off to speak at a conference about arms control. In the speech Sentinels take the place of what would usually be said about nuclear weapons.
Some plot points will seem unfamiliar to you if you haven't been reading X-Men for a while. There's one thing in the spoiler, the other thing you should do is go back and read Generation Hope. Most of the main characters that aren't the X-Men you know from forever are from Generation Hope. And the Schism reading list shows GH #10 and #11 as being part of Schism. The first five are already in trade paperback and the next four should be easy to find at any comic shop.
The ultimate bad guy is a huge surprise. Maybe I don't know enough about the organization he works for, but it seems strange to me that they did what they did. I assume all will be explained over the next few months.
I'm also excited for the creative teams they list for post-Schism. Bachalo did some great work in New X-Men and Pacheco is also great.
Definitely buy if you're into X-Men.