Available in alpha form for the past several month, Canonical has officially released its newest version of Ubuntu, 9.04 (Jaunty Jackalope). Canonical says it will maintain its latest open-source OS until 2010.
Ubuntu 9.04 brings a new kernel to the table, version 188.8.131.52, as well as several other features. Some of these include:
Faster boot time
Latest GNOME 2.26 desktop environment
Better handling of mutliple monitors
Latest X.Org server 1.6 with support for several new videocards
Wacom tablet hotplugging
Ext4 file system support
Brasero 2.26 (all-in-one CD burning application)
Also new to the latest version of Ubuntu is a Netbook Remix version. According to Canonical, the Netbook Remix brings even faster boot speeds, a "built-for-purpose interface" that keeps favorite applications and websites a click away, enhanced power-management features, and easier switching between networks. Canonical says it has tested its Netbook Remix version on a range of netbook models, including Acer's Aspire One, Asus' EeePC 1000, and Dell's Mini 9.