As you know, Google launched their new tablet search interface and even on normal tablets, many searchers are not happy with the new interface.
But on the new iPad Pro with a 12.9-inch Retina display and 5.6 million pixels, it looks really weird. I measured a screen shot posted in the Google Web Search Help forums and it showed 630 pixels of blank space on both sides! That is 1,260 pixels of unused space and only 1,400 pixels of used space (the middle).
Here is that screen shot, feel free to click on it to enlarge:
How does that look to you?
Forum discussion at Google Web Search Help.