Google Docs, Slides and Sheets finally gain iPhone X and better iOS 11 support
Basically, this means iPhone X users will now be able to take advantage of the whole screen, as toolbars have been included with the phone's unusual form factor. There aren't any other visual changes aside from the added iPhone X support, or at least Google doesn't mention anything else.
However, the update brings a couple of other nifty features for those using an iPad, as they will now be able to use multi-app drag and drop to add content into either of these apps. You'll now be able to drag and drop links, images, or a text selection in Google Docs.
Finally, Google mentions that the updates contain some bug fixes and performance improvements, so you'll probably notice that some issues have disappeared (if you found any) and that the apps are smoother than ever.