Polaris Office v4 full version is still not available on Samsung Galaxy S III. But you can download Smart Office 2 full version from Samsung Apps for free. Create, edit, print and share Microsoft Office documents on your Android phone or tablet with Smart Office 2 by Picsel. Furthermore, it supports cloud storage access to your Dropbox and Google Docs. Edit documents from there on the spot. A great alternative office suite while waiting for Polaris Office v4 full version.
As usual, this kind of freebie is not available to all Android phone and tablet. But for Samsung devices only. I am able to download Smart Office 2 for free on my Samsung Galaxy S2 and S3. So I believe it is available free on other Galaxy devices like Samsung Galaxy Note too. Try your luck. Download Smart Office 2 at Samsung Apps now.