Having read the forum and the issues some are having with this and the updates and the hard drives not being ready was this really ready for release.
90% of the posts are concerning the VST. If you're planning on using the VST with a DAW I agree with you, it doesn't appear ready for prime time but if you're not planning on using the VST, the regular program works fine. There are things with the Stylepicker and Songpicker some folks are getting distortion and others like myself don't but that's small stuff. As for the hard drives I just read they're starting to ship now.
Whether or not you even need the 64 bit version depends on what you use for your midi sounds. If you're just using the regular GM synths and Real Tracks then you have no need for 64 bit, just use the regular old 32 bit versions we've all been using for the last 15 years.
Bob