Google announced last night on Google+ that they launched a new more optimized user interface for mobile searchers on slower connections.
To make sure you’re not waiting on Google when you need it most, we’ve rolled out a streamlined Search results page that loads fast, even on those slow connections. You’ll get all the info you need in a simpler format that’s beautiful and easy to use. Best of all: there’s nothing new to download or update -- the lighter version will kick in automatically when needed!
What is the difference, the best example is probably these two side by sides. The left side is the slow version and the right side is the normal fast version:
So Google will tone down the UI and features to speed things up a bit. Plus, look at the Google logos.
Forum discussion at Google+.