A:Answer Yes, you would go into the windows app store and hit a big purple button to start the upgrade. They made it pretty easy and painless.
However, keep in mind that the S2 is a massive upgrade to the original surface RT, with 3-5 times faster speeds, far better cameras, better battery life, a full 1080p screen, a much improved kickstand, and 200gb of SkyDrive storage.
I work with the things all day, and the upgrade is well worth it if you can swing it. Only problem with the S2 is supply - it's sold out just about everywhere.