"A recommended upgrade for anyone using stable, it consists
of equal parts y2k fixes and security fixes. Getting this out
in time has been a last minute scramble, and the people who put in
long hours this weekend should be commended. It seems likely that a
few more y2k issues will crop up in the weeks ahead -- for example
a fix for a y2k problem in nethack was only fixed upstream a few
days ago, and did not make it into the release."