The iPad is available for pre-order today, but...

but I'd want some questions answered first.

from an infoworld.com article:

The iPad questions Apple won't answer

iPad question No. 1: Can you save and transfer documents to the iPad?

iPad question No. 2: Does the iPad support Microsoft Exchange email?

iPad question No. 3: Does the iPad support VPN and configuration management?

iPad question No. 4: Can you use media services other than iTunes on the iPad?

iPad question No. 5: Can the iPad be used for videoconferencing?

iPad question No. 6: Will the iPad's internal storage be upgradable?

iPad question No. 7: Will the iPad allow multiple apps to run simultaneously?

iPad question No. 8: Will Apple allow the use of Flash on the iPad?