I have read somewhere that the screenshots you send to Apple should NOT contain the status bar; however my app shows the status bar during runtime. After having a look aroun
it doesnt seem clear. their docs say Do Not Include Status Bars, so that's probably the best answer. However, it seems alot of apps don't follow that rule and are listed in App Store. some claim they are removing that "No Status Bar" restriction. Until then, best bet is to follow the docs.
here's a handy tool, just drag all your full size (with status bar) screenshots and it'll crop em for u.
https://itunes.apple.com/us/app/status-barred/id413853485?mt=12