New Gmail in version 2.4 for iOS brings better integration with other Google apps and a better experience with attachments.

Released, this morning , with this new version , user can enhanced attachment experience : this means, larger image thumbnails opened up into a full screen viewing experience ; better integration
with Google apps  means Google Drive and Google+ links go directly to the app, if installed.

This app is free and available as a universal app (iPhone/iPad/iPod Touch) in the App Store.