iOS/Android: Google Drive's mobile apps have been updated today with a bunch of new features. The iPhone and iPad versions now allow editing of documents, while the Android update enables comment replies and table viewing.
In addition to support for editing documents, the iPhone and iPad versions of Google Drive also get access to Google presentations and the ability tom see edits others make in real time. The Android version will also support presentations, as well as new commenting functionality and the ability to view tables. Both apps are available now.