...Apart from putting it on the Wiki has someone a good idea where to place such things so that they are visible for people downloading or extracting the distribution? Perhaps a "Readme.1st" etc.
How about a WARNING.TXT which points to important release info on the web site?
In this case it could point to http://cocoon.apache.org/2.1/changes.html - but it would be good to have a way to highlight "important" changes there, dunno if this requires changes to the status.xml processing.
-Bertrand