Olson 2011i

africa Add Africa/Juba (South Sudan) zone.
australasia Samoa skips over 2011-12-30
europe Use KALT as abbreviation for Europe/Kalinigrad
from spring 2011 forward (thanks to Yoshito Umaoka).
northamerica Newfoundland changes time of day for DST start and end
to 2:00 a.m. starting fall 2011 and forward
Change America/Resolute use of EST to 2006-2007 only
Assume Metlakatla abandoned use of daylight saving
as a result of its 1983 vote.
Avoid unnecessary use of US rule in
America/Honolulu; fix two typos in America/Honolulu
comments.
iso3166.tab Add SS (South Sudan) entry.
zone.tab Change America/Resolute entry to
Central Standard Time.
Add SS (South Sudan, Africa/Juba) entry.

And here are some additional changes:

Makefile Remove itca.jpg from distribution
australasia Remove unneeded "+" from "+13:00" in Samoa entry
iso3166.tab Fix comment regarding ISO 3166
newstrftime.3 Remove incorrect status comment
northamerica Adjust America/Goose_Bay as well as
America/St_Johns from fall 2011 forward