Downloaded on my iPad mini .So far things are fine but why can't I double click the home button to see multiple pages .
You must have an iPad Pro, iPad Air 2 or iPad Mini 4 to use Split View.
"View two pages side-by-side. Turn iPad to landscape orientation, then do one of the following:
Open a link in Split View: Touch and hold the link, then tap Open in Split View.
Open a blank page in Split View: Touch and hold the Pages button, then tap Open Split View.
Open a link on the other side of Split View: Tap with two fingers on the link.
Move a tab to the other side of Split View: Drag the tab left or right from the tab bar.
Merge or close all tabs: Touch and hold the Pages button again."
"MULTITASKING
Split View
Keep two apps open and active at the same time (iPad Pro, iPad Air 2, iPad mini 4)."
http://help.apple.com/ipad/10/#/iPad63ea0cbb