On the product page http://www.zimbra.com/products/desktop.html

i have found

Zimbra Desktop benefits:
* It's open source; expensive investments in proprietary clients are no ...

I didn't find ZimbraDesktop in the svn sourceforge repository.

On the Kevin's blog
there is mention that ZimbraDesktop is essentially "extracted" from Zimbra 5.0 tree.

The question is: Is it going to released as opensource ? If yes, under what license ?