Not sure if anybody noticed (there have only been 6 downloads so far so I don't know if anybody has progressed this far into the map)
but there was a pretty huge but simple bug regarding making lava, it was a typo in one of the commands for the /execute part of detecting whether the bucket and cobblestone were indeed inside a cauldron with a fire underneath, It stopped the whole thing from working, so it was impossible to get to the nether or end! Sorry about that! Anyway I fixed that and also did something that might seem a bit overpowered but really needed to be done.
I increased the drop rate on diamonds from "sifting" sand. It was previously 1/81 chance to get it, it is now a 1/42 chance.
The final change is a new thing that I did, originally I was planning to change the starting books every time I updated the map, instead I added "Update books" to the chest at spawn, one new book will be added after every update, explaining what changed and any vital information that must be known to progress in the map.
The download link has been changed, so if you downloaded a previous version of the map, you should download the newer version, which I'm sorry to say means that you must start over on your worlds, unless you want to copy all the new commands over to your pre-existing save of the previous version, in which case you must go into creative mode and fly all the way back to the command portion of the map (which is located approximately X-250 Y10 Z0