Just days after releasing Qt 4.8.4 with 170+ improvements and sharing they hope to release Qt 5.0 by the end of the year, a new version of the Norwegian tool-kit is available for testing.
New packages of the Qt 5 release candidate for Linux and Mac OS X are now available while a Windows installer package is still pending. The new packages are dated 2012-12-04 and the download link can be found in this mailing list message. There's no known Linux-specific issues at this time for the first Qt 5.0 release candidate but there are some open bugs in terms of documentation lacking.
Qt 5.0 was originally supposed to be released this summer but the beta didn't even arrive until late August and was challenged by delays and other setbacks. The setbacks included the Qt Australia office being closed and then Nokia selling off the Qt assets to Digia. Hopefully we will see the final release of Qt 5.0 still make it out in 2012.