Apparently OS 5.0.0.314 has now been leaked for the BlackBerry Bold 9000 along with the BlackBerry Curve 8900 reports an article over on berryreview.
So if you have already updated to a previous unofficial OS then this one will probably bring more stability and address a few bug issues.
Bare in mind this is an unofficial OS 5.0 update and precaution should be adhered to when installing, but then again you can always opt for the Official OS 5.0 update which is also now available and probably much preferred than leaked versions.