You are hundreds of thousands of owners of the Samsung Galaxy S2 to wait until the very nicely updated Jelly Bean (Android 4.1). According to Samsung, it should arrive in February.
This update will incorporate all the innovations introduced by Jelly Bean and a few "features" borrowed Galaxy S3. For example, Smart Stay: This feature automatically turns off the smartphone's screen when you do not stare.
According to Samsung, the update will arrive on the Samsung Kies program in February. As a reminder, the Galaxy S2 was released in December 2011 under Android 2.3 (Gingerbread).