This is a release candidate release and should not be used in a production environment.
Try 7.7 Release Candidate to preview the new features coming in SuiteCRM 7.7.
The focus of SuiteCRM 7.7 Release Candidate is to introduce our new theme SuiteP (SuitePea).
Click here to get the full details of this release and to get the upgrade package from 7.5.x, 7.6.x, 7.7beta1 and 7.7beta2