As per the official website of QGIS , updated version QGIS 2.8 has been released and is ready for download in the QGIS download page.
The Official Changelog for QGIS page says:
This is a special release since it is designated an ‘LTR’ (Long Term Release). It will be supported with backported bug fixes for one year, and will be in permanent feature freeze (i.e. no new features will be added, only bug fixes and trivial updates).
The purpose of this releases is to provide a stable and less frequently changing platform for enterprises and organisations that do not want to deal with updating user skills, training materials etc. more than once per year.
QGIS 2.8 is also a special release because it includes so many great new features, tweaks and enhancements to make the most popular Free desktop GIS even more feature filled and useful.
For more detail about new features, visit this link and to download the QGIS 2.8, this is the official download page.