It sounds kind of like Star Trek, but trust me, this is a lot more exciting! Drupal 7 will access databases using PDO (PHP Data Objects), which allows Drupal to support many different Database Servers in the future (and will bring us one step closer to Drupal running on a SQLite3 flat-file database, woohoo!).
A few people covered the patch arriving in core. And now, even after this major 343.92 KB has been committed, there is still work to be done! A task list posting on g.d.o lists 11 issues (both bugs and features) that now need to be implemented because this patch has hit core. It feels like FormAPI all over again 🙂