Ok, here's a full list of kde-l10n packages that KDE's not distributing as of KDE 4.3.90:
kde-l10n-af
kde-l10n-as
kde-l10n-be
kde-l10n-be-latin
kde-l10n-br
kde-l10n-crh
kde-l10n-cy
kde-l10n-ca-valencia
kde-l10n-fa
kde-l10n-ha
kde-l10n-hsb
kde-l10n-hy
kde-l10n-ka
kde-l10n-ku
kde-l10n-ms
kde-l10n-ne
kde-l10n-oc
kde-l10n-or
kde-l10n-rw
kde-l10n-se
kde-l10n-si
kde-l10n-ta
kde-l10n-te
kde-l10n-uz
kde-l10n-vi
kde-l10n-xh
kde-l10n-zhhk
kde-l10n-sr-latin
kde-l10n-uz-cyrillic
This leaves only 3 packages we have to worry about. (Easy!)
kepas
keurocalc
krusader
Ok, here's a full list of kde-l10n packages that KDE's not distributing as of KDE 4.3.90: ca-valencia uz-cyrillic
kde-l10n-af
kde-l10n-as
kde-l10n-be
kde-l10n-be-latin
kde-l10n-br
kde-l10n-crh
kde-l10n-cy
kde-l10n-
kde-l10n-fa
kde-l10n-ha
kde-l10n-hsb
kde-l10n-hy
kde-l10n-ka
kde-l10n-ku
kde-l10n-ms
kde-l10n-ne
kde-l10n-oc
kde-l10n-or
kde-l10n-rw
kde-l10n-se
kde-l10n-si
kde-l10n-ta
kde-l10n-te
kde-l10n-uz
kde-l10n-vi
kde-l10n-xh
kde-l10n-zhhk
kde-l10n-sr-latin
kde-l10n-
This leaves only 3 packages we have to worry about. (Easy!)
kepas
keurocalc
krusader