Rollback--hmm. Good question. I won't be able to know until I actually see the thing and can evaluate database structure, but believe me, if it looks at all like rollback would be next to impossible and we'd lose too much if it had to be done, I'll just wait till official release to change us over. I'm thinking there would only be a few minor issues that could easily be worked around--they've been testing this for quite some time and have been running the alpha version on their site for a month now, so I don't imagine they'll release a public beta until they're pretty convinced that any possible major issues have already been resolved.