Another milestone on the road towards KDE 4.1 has been packaged and put online for testing. The release notes highlight some features in Dolphin and Gwenview, as well as additional information on where to get the release, make sure you also check your distributor's websites as well. While there are some bugs left, the release already works quite solidly on most people's machines. Performance problems on NVidia chips remain, but we are confident that those will be solved by the teams over at NVidia in one of the next releases of their graphics driver. In KDE 4.1, there is also some preliminary Mac and Windows support coming up. Several apps can be tried by a wider audience on those proprietary platforms this summer already. On the side of Free operating systems, support for OpenSolaris is coming along nicely, but is not free of bugs yet.
As every Beta, we release this software to gain feedback and to provide a preview of our upcoming technology. When encountering problems during testing, please help us by reporting bugs through KDE's Bugzilla so developers are aware of them and can make the necessary changes. When trying this release you will encounter a number of new things, most of the new features are listed on Techbase, make sure to check out that list and give the next KDE a whirl.