You probably didn't notice — 'cuz you're not a part of the iPhone Developer program, nyah nyah! — but Apple just release a second beta of the iPhone 3.2 SDK. It's actually a subtle bug-fix release, with a not-so-subtle call to arms to get cracking on those iPad-ready apps.
Speaking of unsubtle: the reason nobody's been previewing their whizbang iPad work is that Apple won't let them. Not surprisingly, the Apple non-disclosure agreement is still in place to keep major aspects of the SDK, simulator, and development away from the public's prying eyes. In other words: misbehave, and Uncle Steve will send you to bed without supper AND take away your new toy.