Ubuntu’s latest release 11.04, nick-named Natty Narwhal was made available on 3rd April. The major changes are the implementation of Unity, replacing GNOME. The new interface is more attractive and easy-to-use. OpenOffice is replaced with LibreOffice in this version and the default music player is no more RhythmBox. Banshee Player has taken RhythmBox’s position. Firefox 4.0 is the default browser.