Kevin Gibbons shared on Twitter that he was seeing Google test infinite scroll search results. That means, no more ten results on a page but rather, Google would continue loading more and more search results as you scroll down the page.
This is something Google currently does on Google Image search and they've tested back in 2011 in web search, but not something that stuck.
Kevin shared a screen shot showing how long the scroll bar on the right was. You can see that screen shot above.
He said his settings were not set to show 100 search results.
The only issue, this would lead to less ads because there is no pagination.
Forum discussion at Twitter.
Here is another person potentially noticing this, this morning: