I now have the new version of Exchange up and running. I’m only having some dificulty with certificates (except for the OWA certificate) but all else seems to be working fine. OWA looks much cleaner and has more features like the Outlook client has. I quite like it. I also don’t have to refresh the page to know if I have unread mail show up in sub-folders like I had to previously.
Anyway: so far, so good even with the encryption obstacles.