I have been using the new iCloud Drive App (iOS9 - iPhone 6), and I can not seem to open any documents for the purpose of editing. I understand that you are suppose to hit the share icon, and then open-in the appropriate app. But, the required app does not appear in the share menu. So, for example, if I want to edit a Pages document, I open iCloud drive and tap on the document. This opens a view of the document, which can not be edited. When I hit the share icon to open-in Pages, Pages does not appear as an option. Anyone else having this problem? Thanks.