User visible changes in release 1.13
+* `date -d "01/01/1998 3 years" +%Y' now works properly. It prints 2001.
* expr's match operator has been corrected to use basic regular expressions
* New programs: factor, seq.
* date accepts new option --rfc-822 (-R) and new %z format.
* date: fix bugs in the handling of date -u +'%s %Z'.
* date accepts new option --reference=FILE (-r FILE) analogous to the
like-named touch option.
-* date can now format dates up to 2037
+* date can now format dates up to and including ones in the year 2037
User visible changes in release 1.12
* None.
User visible changes in release 1.11