Today, Google has released its newest search algorithm update for mobile search results. It is specifically targeted at displaying mobile-friendly website results in favor on non-mobile versions. In the first phase of this update the focus lies in searches conducted on smartphones only, tablets and other mobile devices are not yet being targeted by this update, but chances are that they will be added soon.
Is your site mobile-friendly? Check it now to ensure that you are listed in the mobile search results using the Google Mobile Friendly Test.
Find more information on the smec blog (German).