The overwhelming majority (if not all) of those being shipped now are Jelly Bean. You can look at the System/About Device info in your Settings and see. If it is not already a 4.1 sequence, just do a software update.
Hi, I'm pretty certain it was jelly bean. Believe Samsung upgraded from ice cream sandwich in January of this year. Forgot to mention that touch screen was a problem too. Sometimes it required a gentle tap and at other times two or three firm taps.