Version 3.1.0 was released on June 1, 2010, just under a year after the release of 3.0.0. This was followed by the releases of 3.1.1 and 3.1.2, each bringing a number of bug fixes and feature enhancements to the table. A major part of the 3.1.x series is Search Engine Optimization, with a lot of the changes focusing in this area. Other new features include a brand new Mobile skin, integration to many social networking sites such as Twitter and Facebook and even more developer tools to create software modifications. Version 3.1.3 was released with bugfixes and a number of code changes for imminent updates to the official add-on applications. Version 3.1.4 was another maintenance release.