The video's not going to disappear off the face of the internet after tomorrow. I'm sure they will definitely see it. As a matter of fact, I don't think Nintendo has ever emailed people regarding Nintendo Direct before.The only problem with having a software only or hardware lite tuesday conference, is for people who miss or skip tomorrow's direct video.
IGN, The Verge, Joystiq... i'm sure plenty of others have not posted about the Nintendo Direct tomorrow, now several hours after it came to light.
their writers have been waiting for tuesday to get hardware information, so if they miss or skip tomorrow... then on tuesday they will say what the hell where's my hardware information!
I don't think we should expect the kitchen sink tomorrow. I think there has to be a significant chunk of hardware time in the actual conference because that's what the conference is for afterall. tomorrow would be very general i think... just enough to make headlines around the newssphere and get everyone ready for monday's third party conferences. Then tuesday would be in depth OS perhaps.