New Jellybean 4.1.2 leaked today, and man is it clean! for Galaxy S2

All you Galaxy S2 Power users out there - come and get it!
This build is very much near perfect so we believe that Samsung will actually start rolling out the Official Jelly Bean update for the Samsung Galaxy S II very soon. The day Samsung starts to roll out the official update you will be able to install the latest update through Kies or OTA update.
Some of the Enhancements in the new Jelly Bean Update:
- Buttery Smooth Performance & Great Stability (Thanks to Project Butter)
- New TouchWiz Nature UX (Same UI as of the Galaxy S III and Galaxy Note II)
- Samsung’s Cloud services
- Direct Call, Smart Stay and Pop-up Play Features
- New Widgets From the Galaxy S III
- 2 Home screen modes
- New Notifications bar
- Google Now

This is a PRE-RELEASE version so not official from KIES.
As this is a PRE-RELEASE firmware so expect some minor bugs.

Firmware Details:
Android Version: 4.1.2 – JZO54K (Jelly Bean)
PDA: I9100XXLSJ
CSC: I9100OXXLS1
MODEM: I9100XXLS6
Changelist: 462349
Build Date: 6th November 2012

Download: I9100XXLSJ/I9100OXXLS1/I9100XXLS6

Download it here