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I know that Ubuntu can be upgraded to a development release by starting update-manager -d

However, in Kubuntu update-manager is not installed so I suppose some KDe-specific program need to be used.

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Note to myself: for the last couple of releases I need to run sudo mount -o remount,rw /tmp before running the upgrade – Sergey Jan 27 '14 at 1:27
Oops, the right command is sudo mount -o remount,exec /tmp – Sergey Jan 27 '14 at 1:41
up vote 8 down vote accepted

sudo do-release-upgrade -f kde -d

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Awesome, -f kde even provides some GUI. – Sergey Jan 31 '12 at 11:24

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