1.51 is currently at RC3, you can find the download in the forum thread at http://www.realmsbeyond.net/forums/showthread.php?tid=8411
There are a few details left.
-I still need to make an optional file for a 10 book mode that works with the AI.
-I think I was supposed to remove the starting diplomacy changes and leave them optional?
-I believe the same was requested for some of the treasure changes? Not sure... these were voted "include" on the forum as far as I remember.
-Some people mentioned the improved AI should come with reduced resource advantages for the AI. I can't decide on those numbers on my own because I'm not playing the game (only the CoM mod), so I will need suggestions for the new numbers.