Apple just made it known to the world that the US launch of the 3G iPad will happen on the very last day of the month (hey, they did say late-April!) If you’ve been clamoring and waiting for a Wi-Fi + 3G Apple tablet, April 30th is your day, as Apple Stores across the United States will start selling them that day at 5:00 PM. If you pre-ordered your 3G iPad before yesterday, you should expect it to arrive on the 30th as well. If you order it online now, you’ll have to wait until May 7 for it to arrive.