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> <>|| We’re preparing Kubuntu 13.04, the Raring Ringtail, for distribution in April 2013. With this early Alpha pre-release, you can see what we are trying out in preparation for our next version. We have some interesting things happening, so read on for highlights and information. '''NOTE:''' This is an alpha pre-release. Kubuntu Pre-releases are NOT recommended for: * Regular users who are not aware of pre-release issues * Anyone who needs a stable system * Anyone uncomfortable running a possibly frequently broken system * Anyone in a production environment with data or workflows that need to be reliable Kubuntu Pre-releases ARE recommended for: * Regular users who want to help us test by finding, reporting, and/or fixing bugs * Kubuntu developers = Getting Kubuntu 13.04 Alpha 2 = ##== Upgrading from Previous Versions == ##(is this supported yet?) ##To upgrade to Kubuntu 12.10 from previous releases, follow the [[https://help.ubuntu.com/community/QuantalUpgrades|Upgrade Instructions]]. == Download a Disk Image == * [[http://cdimage.ubuntu.com/kubuntu/releases/raring/alpha-2/|Bootable images for standard PCs/laptops/netbooks]] Instructions for burning the image to a DVD or USB flash drive can be found on the [[https://help.ubuntu.com/community/BurningIsoHowto|Burning ISO Howto]]. We recommend you learn how to [[https://wiki.kubuntu.org/HowToMD5SUM|check your image file]] so your pre-release is as it’s supposed to be. Compare your MD5 checksum with the correct ones found [[http://cdimage.ubuntu.com/kubuntu/releases/raring/alpha-1/MD5SUMS|alongside the images]]. = Alpha 2 Highlights = == Software Updates == === KDE Plasma and Applications 4.10 === [[http://www.kde.org/announcements/4.10/|{{http://www.kde.org/announcements/4.10/screenshots/plasma-4.10.png}}]] [[http://www.kde.org/announcements/4.10|The latest release of KDE's Plasma Workspaces and Applications 4.10 ]] adds a new screen locker, Qt Quick notifications, colour correction in Gwenview and faster indexing in the semantic desktop. == Infrastructure == === Secure Boot === Kubuntu should now be able to support [[https://en.wikipedia.org/wiki/Unified_Extensible_Firmware_Interface#Secure_boot|UEFI Secure Boot]], a standard for controlling what software can be run on a computer. Supporting Secure Boot, a part of the Windows 8 certification requirements for client systems, ensures that Ubuntu will continue to provide an "it just works" experience on new hardware. If you have hardware for this, we would appreciate your help in testing it out. === Linux kernel 3.8-rc6 === The Alpha 2 Raring Ringtail snapshot includes a the [[https://launchpad.net/ubuntu/+source/linux/3.8.0-6.11|3.8.0-6.11 Ubuntu Linux kernel]] which is based on the the upstream [[http://www.kernel.org/pub/linux/kernel/v3.x/testing/linux-3.8-rc6.tar.bz2|v3.8-rc6 Linux kernel]]. Notable changes include initial support for arm multiplatform support for TI omap3/4 and Freescale imx6, alx ethernet driver support, misc config updates and security fixes. === GNU Toolchain === 13.04 is distributed with an updated default toolchain that includes: [[http://www.gnu.org/software/gcc/|GCC]] 4.7.2-21ubuntu1 (was GCC 4.7.2 in 12.10) and eglibc 2.17-0ubuntu4. ARM 64 bit cross compiler (gcc-4.7-arm64-cross 0.4) is also available. Further information can be found upstream ([[http://gcc.gnu.org/gcc-4.7/changes.html|GCC-4.7]], [[http://sourceware.org/gdb/download/ANNOUNCEMENT|gdb]]). === Java Toolchain === [[http://openjdk.java.net/|OpenJDK7]] is the default Java implementation. Current revision is: OpenJDK-7 7u9-2.3.5~pre1-1ubuntu1. = Known Problems = == Kubuntu == * Bug:1086840 Missing bookmarks.xml error <> = Feedback = Development of Kubuntu 13.04, the Raring Ringtail is ongoing and bugs are fixed every day. Before reporting bugs, please ensure your system is up to date. For verifying installation related bugs, updated disk images are available from [[http://cdimage.ubuntu.com/kubuntu/daily-live/current/|Daily bootable images for standard PCs/laptops/netbooks]]. You can give us feedback on the [[https://plus.google.com/107577785796696065138|Kubuntu Google+]] page.