A new version of Ubuntu Tweak has been released today: 0.5.5. There's no official announcement yet, but the new version is now available in the Ubuntu Tweak stable PPA. Looking and the BZR changelog, there's only one new major feature in Ubuntu Tweak 0.5.5: PPA Purge (which was also available in the WebUpd8 PPA by the way), which you can now use from within Ubuntu Tweak.

Ubuntu Tweak 0.4.9 has been released, a great application for tweaking settings in Ubuntu (Hardy, Intrepid, Jaunty or the latest development Karmic). From this version, Ubuntu Tweak has different package for i386 and amd64 and works for Karmic too.

Among the improvements and new features:

Ubuntu Tweak 0.4.8 is released.The number of PPA source from launchpad.net is increasing. A lot of new and updated applications have their PPA source, it’s really useful for users. Ubuntu Tweak includes a lot of popular PPA sources to let people to use PPA easily.

Ubuntu Tweak, an application which provides several extra tweak options for Ubuntu, has just released the new 0.5.0 version.

Ubuntu Tweak 0.5.0 is released. With this tool it's possible to tweak various settings of the popular Ubuntu Linux distribution.

Yet another version of Ubuntu Tweak released. It’s 0.5.2!.It doesn’t introduce any new feathers, but we recommend that everyone should update.This version mainly fixed a lot of bugs.

The last Ubuntu Tweak 0.5.4 doesn’t work under the Xfce and KDE, so this is mainly a bug-fixed release for people who use Xubuntu, Kubuntu.

Ubuntu Tweak 0.5.4 was released today. It doesn't come with new major features except an option to customize the GDM (login screen), which you can use to change the login screen background, logo, disable the user list, disable the login sound and disable showing the restart buttons:

It’s a very important version of Ubuntu Tweak, it has new fresh interface, the ability to sync data from the website and lots of new options added.