Question: Has anyone checked out a copy of Drupal 7 yet? What do people think?

I'm pretty excited about the PDO and all of the designers I work with a very excited about the new admin interface/structure.

Do we have any Drupal core developers here on Stack Overflow?

Answer: 
It looks good, and the API is now frozen so module developers can get going before the final release. 

A lot of the strength of Drupal comes from the modules and until they are on D7 it won't have a huge amount of benefit over D6.

The architectural changes are good and the api changes generally seem to be a step in the right direction. Personal favourite is RDF in core.

[Eaton](https://stackoverflow.com/users/19411/eaton) is still the top Drupal answerer on SO, and has done a lot of work on Drupal

[Greggles](https://stackoverflow.com/users/56791/greggles) has dabbled in SO and is part of the Drupal security team
Drupal Gardens is now in public beta; it is free, and you can export your site at any time. Check out the [FAQ if you know Drupal](http://www.drupalgardens.com/content/how-do-drupal-7-and-drupal-gardens-differ).