In the month since the second beta the KDE community has fixed hundreds of bugs. Development of features has been frozen for a while now and the Software Compilation is at the point where it needs a good testing to shake out the last issues.
So if you can spare some time and can help us identify problems or (in)validate other bug reports we'd be more than happy. Moreover, if you want to check out what's coming in terms of features and improvements to our workspaces, applications and development platform, this RC is a good choice for a test run.
Read the announcement for more information including links to where to get it.
And as usual the disclaimer: this release is NOT production ready and only for testing!