Unlike the current forum software, your e-mail address won't be public in the new forum. There will be a contact form that allows members to send messages via e-mail, and of course there will be PMs. The only way someone could get your e-mail is if they send you an e-mail via the contact form and you reply to it.

I think you guys will be pleasantly surprised by the capabilities of the new software, particularly in the area of account management. You'll have a lot of control over your forum experience.