Voting starts in March for the Drupal Association Board election.
So the installer doesn't work yet, but for MySQL everything else should. For those who want to try it out, you can check out a copy of Drupal with the new database code in it from chx's public svn repository: https://4si.devguard.com/svn/public/pdo . A proper patch will be forthcoming as soon as the installer works, which should be Very Soon Now(tm). For a complete list of the new features it offers, see: http://www.garfieldtech.com/blog/drupal7-database-update .
If you want to help with the installer, let chx know so he can give you commit access to it. :-)
This patch will also deprecate about a half-dozen old feature requests for the database layer, as it works a whole bunch of features into one cohesive system. I'll go flag those as duplicate shortly.