Google recently announced it is releasing a new version of it’s ranking system on April 21st which takes account of whether your site is mobile ready. In particular, if your site is mobile-ready it will rank higher on mobile devices.
This is a significant acknowledgement from Google of the importance of mobile devices (both phones and tablets) in the browsing market. It’s also a fantastic opportunity to suddenly increase the ranking of your site as compared to your competitors who may not yet have implemented mobile versions of their site.
For more details on the process involved see this link: