Congrats! Or maybe-congrats: You might be a part of the test group of users that Google's using as digital guinea pigs for a redesign of its search results page. Unfortunately, there's no way to self-select to receive the adjusted results page, nor is there indication as to how (or why) Google's grouped its users the way it has.
For those unlucky ones that aren't getting the special Google treatment, here's what the new search results pages looks like. Starting off, it's a lot more spacious: Specifically, Google's adjusted the spacing between the results it delivers to increase the total white space (and page length) of the search results page itself.
Gone are the familiar "cached" and "similar" links—tools that allowed a user to pull up related pages and "snapshots" of pages that have been saved by Google in the event that the actual link was down for any reason. Also gone is the old, familiar underline under each page title: Google likely assumes that its users know how to work a search results page by now, and page titles are now just rendered in a larger blue font overtop the page's one-to-two-line description.