Not much that I am missing for sure. But at some point they will release another update, and I am wondering if they will ever fix this. They have known about it for a while. I really don't hold out much hope for a fix.
For a detail of new stuff for 4.2: https://services.celemony.com/cgi-bin/WebObjects/LicenseApp.woa/wa/Melodyne4Service/downloadUpdate?token=72d7f3d058214e64ad07e21f2e777025&trk=c50f1f12594148598ab106a0a593d9d0