[development] new features in D6 core?

Are new features still being considered for Drupal 6 core? I've coded a new "Set language" option for the bulk node update form at admin/content/node. I filed an issue report with a patch and screenshot, at http://drupal.org/node/609262 . But from my reading of other issue reports, it seems that the 6.x API is considered to be frozen at this point. If I understand correctly, that would rule out including my patch, which adds some hooks to the locale module. Can someone please tell me if this is true, or even better, point me to a definitive statement? Thanks, Andrew.