As in CVS tagged? If so, surely you know the date/time it was built/checked out. I think you can tag things in the past in CVS can't you? Just check out a specific date/time and then tag it? Or can you only put a tag on what's currently HEAD?

I have no problem you releasing an alpha10. I just thought it might be easier to go with alpha8 for now. Saves someone (and that's someone else now right?) having to go through the release process again.