Development of the WebWiz software has essentially stopped now. PHPBB should offer better access from mobiles and tablets and should improve image uploads too.
It will not be without its challenges. Everything will transfer over but URLs will be different so I'm not sure yet how internal links and images will work.
All user accounts will transfer over but passwords are encrypted and cannot be transferred over. As such, you'll not be able to log in until a new password has been sent to you. As part of the upgrade this should happen during the migration process so it's important to ensure you email address is correct in your profile.
I'm hoping the migration will take place this week but they've not yet given me a date, as soon as I find out I'll let you know. Don't be alarmed if the forum is closed, it will need to be taken down for a day or two whilst the migration is completed.
I'll post full contact details for reporting issues and will work through them all as quickly as possible.