bakery for drupal 7

"how"

Bakery has a Drupal 7 branch, you can download the dev release on http://drupal.org/project/bakery or checkout from CVS/Git.

"when"

Now, but I wouldn't recommend you deploy on production sites unless you do some serious testing to be sure it works for you.

To further stabilize Bakery for Drupal 7 please test it out, help out in the issue queue trying patches or providing patches.