This recommended update for timezone provides version 2015d with various adjustments (boo#932118):

* Egypt will not observe DST in 2015 and will consider canceling it permanently. For now, assume no DST indefinitely.
* The abbreviations for Hawaii-Aleutian standard and daylight times have been changed from HAST/HADT to HST/HDT, as per US Government Printing Office style. This affects only America/Adak since 1983, as America/Honolulu was already using the new style.