Will it affect iPad sales? Possibly, but will most likely be negligible. As stated before, it's a slightly larger screen, so that's still a factor to take into account. Then there's the fact that since it's still a phone at the end of the day, it won't run iPad-exclusive apps. In some ways I guess there's a comparison between Apple and Samsung. When the Samsung Mega and Note came out, it affected the Galaxy S series a little, but nonetheless, there're still consumers that opt for the latter and that still carries to today. When it's released, by around New Years 2015, we'll most likely have a statistical graph/chart to show the sales of all device from September/October from the new generation release up until and after the Q4 holiday season.