As part of working on the site upgrade, our messaging and notifications system is discussed. Unfortunately we don't have a reliable number on how many people rely on email notifications from localize.drupal.org (due to automated signups) and the complexity of the upgrade process for notifications (given that we need to migrate to new modules) might set back our upgrade process even longer.

While the Drupal Association is busy with updating drupal.org itself to Drupal 7, the DA is not directly involved with the localize.drupal.org site maintenance and upgrade (similar to other subsites), so we are not tied to the main site upgrade in any way (neither do we get financing for this work).

One possible shortcut is to sidestep email notifications for the immediate upgrade and get back to the feature later. Are you heavily relying on notifications from localize.drupal.org? Please speak up at http://drupal.org/node/1392694! Thanks!