The rom is from here:
http://xdaforums.com/showpost.php?p=53941429&postcount=2488
The current version is 33, i don't know where you found this rom but it's better if you delete this thread. The owner (the man who worked a lot this days to make this happen) said he will open a thread in development section soon, so let him fix another bugs and open his own thread, he deserve this. They worked a lot in the last days, you can read the thread and see
so... please delete this thread and let him open one when he is ready
If you want to try the Preview L, just go here:
http://xdaforums.com/showpost.php?p=53941429&postcount=2488
@sykopompos post: http://xdaforums.com/showpost.php?p=53941429&postcount=2488
Edit: Thanks!