No, they didn't say any apps were gonna be available today. The App Store will be in iTunes and an app on the iPhone. The iPhone app will download apps wirelessly over WiFi, and if they are under 10MB over Edge or 3G. The App Store is part of OS 2.0, which they said was coming "early July". As the 3G iPhone is coming out July 11, I'd bet that's the date for OS 2.0 and thus the App Store.