I'm not going to give it all away, mostly because it's too hard to explain in detail, and partly because it's still a work-in-progress.
By far the biggest change is the screen res has been increased to 1024*768, so whilst we still haven't got an adjustable screen size, we do have more real-estate to use.
The next most notable aspect is the dorky borders are gone. The map starts at the screen edge on the left, and right under the top bar at the top.
Tied in with that, is the right-hand control panel is now gone also - so the map stretches from the left to right panels. When plotting allied missions you can see from Land's End all the way to Poland in the one screen. I think we've over doubled the visible east-west map, and made a modest improvement to north-south.
Basically, I looked at the Uncommon Valour and War Plan Orange screen shots, and realised I liked the layouts, so I kept them in mind while designing the new ED/BTR layouts. Things aren't the same, but they are reminscent of these other games. It's really made a huge difference to mission planning and axis reaction.
There's more, but I just wanted to whet your appetite first, and remind you that we are head down, a*** up...
thats my censoring...