+* Default cookie expiration time has been reduced to 30 days. Login cookie expiration time is
+ kept at 180 days.
+* A new configuration variable has been added: $wgCookieSetOnAutoblock. This
+ determines whether to set a cookie when a user is autoblocked. Doing so means
+ that a blocked user, even after logging out and moving to a new IP address,
+ will still be blocked.