Several applications have made beta releases and packages are available for Kubuntu for anyone wanting to test and give feedback to their developers.
Amarok 2.3.1 Beta is available for Kubuntu 9.10 while Amarok, KOffice 2.2 Beta and KDevelop 3.10.2 are available for Kubuntu 10.04.
To update, use the Software Repository Guide to add the following repository to your software sources list:
ppa:kubuntu-ppa/beta