Cloud applications like Gmail and Google Docs are key enablers for being mobile, so improvements even to the desktop web app versions are important for mobile users. If you use Gmail you might know about it’s great ability to view attached Word documents by displaying them in Google Docs, and you can save those attachments in Google Docs. I find that viewing Word documents attached to Gmail messages to be much faster than viewing Word documents attached to Outlook messages, when you take into account that you aren’t loading the full copy of Word.
Google has released an update to the document viewing capability of Gmail and Google Docs that adds support for many more file types. In addition to adding support for Excel and PowerPoint, you can also view files from Adobe Pages, Illustrator, and Photoshop. Lifehacker has a great article that provides the list of all of all the supported file types.