2.0 has 3 parts. a) Enterprise, b) SDK and c) New features.
The 2.0 software has enterprise support. Push e-mail, contacts, remote wiping, directory look-up. Secure VPM built in from Cisco.
They have had beta program with 35% of Fortune 500 (Top 5 banks, Top 5 Securities firms, 6/7 of airlines).
Jobs is now showing a video of enterprise customers who have used Exchange on iPhone. Sonnenschine, Disney, Genentech etc etc.