You're a bit impatient, my dear friend.
You do not need to try the beta, just wait for the final version. It'll be out in a few days or so. They don't call it 'beta' for nothing.
Are you a source for official news? If so, do you know if the final version will provide for any Mac oriented usefulness for attaching a hard drive to the USB port, for example?
I agree with you on the beta thing, however, part of the seeming impatience on my part, and perhaps others, is that generally speaking, many of us who followed the rave reviews to the 655--especially from the Mac world--may have become a bit disillusioned.
Be patient with us ''Mac people.'' We're not ''Stepford people.'' We're just used to things working...
Yeah, okay, so MobileMe was a fiasco...

However, is it too much to ask that a bicycle seat come standard with a new bicycle?
