The project tree for Lorentz is winding down at various places, and the l10n dashboards make no difference.
The l10n builds off of the projects/firefox-lorentz project tree named "lorentz" have been stopped, and the sign-offs are closed.
Sign-offs for the ongoing work on 3.6.x including the lorentz strings should now go back onto the fx3.6 app version. Sign-offs from the lorentz tree have been migrated to fx3.6 where it made sense to me.