It's actually going really well. I have to appologise for the long delay, but hopefully we can make a big deal when it's released, so more people will make maps. It's a LOT easier to make maps with it than the old version, in fact it eliminates the need for those 2 command-line tools(for people with dos-phobia)
So you can see where it's at now, I uploaded a copy to my web server:
To try it out, start am19.exe, click on the open button, open the 'test' folder, and open data.txt.
Try selecting multiple units
Also the map properties page is there, but it doesn't work yet.
There isn't too much more work to do, just finish off the events editor, and finish the save-file code.
Hopefully it will be out soon -- oh, one last thing, I'm trying to get rid of the need for TGAs, not sure how, but I will.