I see this has been put on the support portal for x86 and x64.

Referring to Zimbra Product Management Portal I found one interesting ZCO bug that 7.1.2 is supposed to fix: Bug 59968 – Orphan appointments from the same recurring meeting do not show up

However on testing the ZCO against ZCS 7.1.1p2, I still see the bug, so that particular fix may need the server to be updated as well.