I am in the process of analyzing the changes to the \AI, \Data and individual race files with the most recent patch (1.27).  As I did for the previous patch in December, I am posting blackline comparisons of the changed files against 1.19).  As far as I can tell the only files (other than the .exe of course) that have changed and that modders may have to adjust for are the following:
\Data Directory
Components.txt (only Daynarr's APB change   

)
Settings.txt
Happiness.txt
SectType.txt (changed only a typo)
TechArea.txt (only decreased max ship construction level from 10 to 9)
\AI Directory
Default_AI_DesignCreation.txt
Default_AI_Construction_Vehicles.txt (only increased # fighters in several AI states)
Default_AI_Strategies.txt
\Pictures\Races (all individual races)
[Race]_AI_DesignCreation.txt
Since tThe zip file is so small, I decided to just attach it to this thread.  Sorry for those that do not have Word, but that is all I have.  I will also post comments as I review.  Hope this helps!
-TG
[This message has been edited by Tampa_Gamer (edited 21 February 2001).]
[This message has been edited by Tampa_Gamer (edited 21 February 2001).]
[This message has been edited by Tampa_Gamer (edited 21 February 2001).]
[This message has been edited by Tampa_Gamer (edited 21 February 2001).]