Samsung India has started rolling Android 4.1.1 Jelly Bean update for Galaxy Tab 2 P3100 tablet in the country. 360.66MB in size, this update is now available over-the-air as well as via Samsung Kies app.
You can manually check for the update by going to Settings > About device > Software updates. If you have already updated your tablet, do let us know about the experience in the comments.
Thanks Satyanand, harsha