Packages for the release of the KDevelop 4.2 RC 1 are available for Kubuntu 10.10 and Natty.
These are beta packages for beta software, expect bugs.
Bugs in packaging should be reported to kubuntu-ppa on Launchpad. Bugs in the software to KDE.
Users of 10.10 can install it from the Kubuntu Beta PPA. This will also install KDE Platform 4.6 Beta.