Just because a software version is listed as a fix for a known bug doesn't mean that it's available yet, it just means that it's fixed in that version of software, which might or might not be released yet. If downgrading to an earlier version isn't an option, than you simply have to wait, however long that it may be for it to be officially released.
As of July 26th, VCS/Expressway X8.8.1 has been released and is available for download, here are the VCS X8.8.1 Release Notes for reference.
