For example, the first Apple iPad was introduced on Wednesday, January 27th and was in stores on Saturday, April 3rd. The sequel was introduced on Wednesday, March 2nd and was rolling off the shelves on Friday, March 11th. At the time of the announcement of the iPad 2, Jobs was on medical leave but was so pumped about the device that he came up off his sick bed to make sure he was there for the presentation.
We have already seen a number of different rumors about when the Apple iPad 3 will be launched, and there is speculation that the screen will feature a higher resolution display. One report called for a March or April launch of the 3rd generation Apple tablet, while another seems to confirm both the launch of the Apple iPad 3 on Steve Jobs' February birth date, and the higher resolution of the screen.
source: EconomicTimes, 9to5Mac via PCMag