UCS Upgrade to 8.0.8
UCS will be upgraded to version 8.0.8 during the maintenance window (5-7 a.m.) on October 30. To accommodate the necessary enhancements and bug fixes, UCS will be unavailable during that time.
Mail sent to users during that time will be queued and delivered after the upgrade has been completed.
More information on the bug fixes and enhancements being installed can be found through http://files.zimbra.com/website/docs/8.0/ZCS_808R1_NE_ReleaseNotes_UpgradeInst.pdf
More information: UCS Upgrade to 8.0.8
Story added 16. October 2014, content source with full text you can find at link above.