If you had made a search you would have found out that the next version is going to have 64-bit support. But I have a feeling we will have to wait until they have a final OS X 2.1 version before we see one, even a beta.
Now that OS X version got RC. Is there hope for a beta with 64-bit for win/lin in the near future? BTW, I think the Win/lin version should be renamed to parallels desktop as well. Kind of confusing for new users many when it sounds like there is too different products. "When does Parallels Desktop come out for windows? it rocks!" "Parallels Workstation is the same as Parallels Desktop..."