The recent caen, xposed and venice releases ARE NOT OFFICIAL. Please do not support these releases.
For details see the splashdamage forums...
http://www.splashdamage.com/forums/viewforum.php?f=9
The original creators of these maps HAVE NOT given permission.
In brief, these maps are being released with mapscript changes and some bug fixes. These should be released in a seperate pack NOT as a new map release. The person doing this has been told what to do and what he shouldn't do but he continues to either just not understand or simply continuing to be 'rude'.