I ordered mine a few weeks back. Got it today.
Took well over an hour to install/upgrade my 10.1.5 800/1gb/Tibook.
The results were worth it. Fast Fast Fast!

1 odd thing,
It created an account called "other" . Untill I find out why I am not going to kill it.

Looks good!

I've ordered mine on Monday and received it today (Ok full price and in France), but I don't regret it.

It took one hour to install on my PowerPC G3 beige. Another half hour to understand I have to desintall and reinstall my printer for it to be recognized (a Lexmark Z43). Another hour to install the Developer tools and the whole afternoon to test applications and development.

The only thing which does not work at the moment is the Apache server. Apparently there is a problem with RendezVous.

Apart from that, it's the first time a new release installs so smoothly.

I heard something about "other" on http://yourmaclife.com/
Check it out.