Because of the severity of the Sequoia security bug, kernel upgrades for shell servers and the web and mail servers, basically anything exposed to the public, will happen tonight instead of Friday as originally planned, and non-active servers will be upgraded sooner than 11pm.  The downtime for these will only be about 1 minute each.  The file servers that do not have public exposure will still be upgraded tomorrow.  VPS’s may or may not get  upgraded this evening.