On the excellent Solaris Developer Center web site, you can read this:
While we're on break, consider ordering your Solaris and Sun Studio free media kit. It's on backorder but new kits will be available in the New Year.
So it is Christmas time, don't hesitate !
Side note: Since i was one of the very first to register for this kit, i get one (shipped in France) as expected. Sadly, it was the 6/06 Solaris update, in the same time the 11/06 was released...