I was looking on my 10A354 install disc today, and had a quick look at the icon for the 10.6 installer. I opened the package, and found it looks a bit like this:
http://www.flickr.com/photos/38976210@N04/3591912922/
It says 'Developer Preview 2009' on. In previous builds, they just carried forward the Leopard install icon. This is something new.
Of course, it could just be to indicate it's a 10.6 Dev Preview from '09, but since there have been several, I think it may indicate something else.
Thoughts?