0.4.0-beta2 is now out!
The main reason for releasing yet another beta in such short time (don't get used to weekly releases!

) is that MapScripts were triggering plenty of erroneous asserts that made testing more difficult. With 0.4.0-beta2, this problem is gone as long as you use the MapScripts included in it.
This version is a beta, which as I mentioned in the latest release post means that it is a version intended for those who want to help in testing the new features, trying to find new errors and providing bug reports and/or feedback. The
Testing Guide that should be helpful for those interested in testing this release. Asserts are not as annoyingly common as they were in 0.4.0-beta1, but you will eventally run into some assert errors we are trying to debug. To prevent assert errors from blocking your game, you must disable full screen mode (you can find the instructions to do this in the testing guide).
This version has little changes with regard to 0.4.0-beta1. 0.4.0-beta2 version of More Naval AI has been updated to the recently released
2.52 version and it also includes Calavente's improvements to the French translation. 0.4.0-beta2 also includes updated versions of the following MapScripts as part of the inclusion of
MapScriptTools:
As part of the MapScriptTools support, most of these MapScripts have additional features such as the possibility of using an improved resource balancer, different options for team starts, and the random appearance of special terrain features in the maps. Certain maps will have additional options they previously didn't have. For example, in Erebus it is now possible to use the MapScript's starting position method or to disable it and it includes additional world wrapping options.
This version of MapScriptTools differs from the original one created by Temudjin. It is still in development (it has not been tested yet in the other mods which it should also support) and is using this development page:
https://bitbucket.org/Terkhen/mapscripttools-for-civilization-iv
Bear in mind that the other MapScripts included (ErebusContinent, MountainCoast and WorldOfErebus) do not have MapScriptTools support and therefore do not include this feature. They should also be assert free now, though.
The changelog of 0.4.0-beta2 can be found below. If you want to see all changes since 0.3.1 you will also have to check the
changelog of the previous beta.
In the first post of this thread you can find the links for download, wiki, feedback, future plans and other useful information.
Happy 2014!