One of the most important feature updates this time is the editing functionality. This includes the addition of new vector editing tools:

• delete part of multipart feature
• delete hole from polygon
• simplify feature
• Added a new "node" tool (in advanced digitizing toolbar).
• New functionality for merging features
• Added undo/redo functionality for vector layer editing.
• Added option to show only markers of selected features in editing mode.
• Change layer's icon in legend to reflext that the layer is editable.

Other important updates are part of:

• Plugins
• Grass shell enhancements
• Keyboard shortcuts
• Map composer
• Attribute tables
• Projects management
• PostGIS & the PostgreSQL Provider
• Symbology enhancements
• Command line arguments

You may download the new version here:

http://www.qgis.org/en/download.html