The map composer (used to prepare printable map compositions) has received a number of improvements in QGIS 2.6.

• You can now change the secondary fill color for scalebars
• Holding shift while drawing line/arrow items constrains drawing to horizontal, vertical or 45 degree angles
• Holding shift while drawing other new items constrains them to squares, holding alt causes item to be drawn from the center
• Right click no longer locks/unlocks items, this is now handled by the new items panel. Locked items can no longer be selected from the composer canvas, allowing for interaction with items below them.
• Holding alt while pressing cursor keys results in a 1px movement for items
• Removed the destructive 'Load from template' menu item, replace with a new non-destructive 'Add items from template' action