The KDE 4 release schedule was shifted. Instead of the end of October KDE 4 will be released at the end of December.
Allen Winter sent an e-mail to kde-devel list saying that the release team made the decision to slip the release date by two months:
We feel that there are crucial elements of the release that need more development time. The feature freeze (less exemptions) remains in effect.
Interesting in this regard is the fact that the feature freeze is still in effect, meaning that the additional time will be spent mostly on bug fixing.
I must admit that this isn’t the worst decision the release team could have done. The time table was pretty tight and the current KDE version is still lacking some stability. Plus, some main features are still in heavy development. I hope that some of the KDE 3rd party applications will be ready for KDE 4 at that time too. And I hope that there will be many additional gadgets ready for Plasma. 🙂
The downside of this decision will be that several distributions will not include KDE 4.0 in their next releases as the default KDE version. But it is likely that they all will provide additional KDE 4 packages as an alternative option.