Keeping up to date with the changes in d-i is a daily thing. I just dusted off some new strings in the level 1 master file for Tagalog and am working on several packages in the other levels.
I updated the translation for isocodes iso_3166 table and submitted it the other day to Tobias.
There are other packages that need attention, with only a few strings.
I'm hoping though that there will be volunteers for the other major packages that need work.