Last months we've spoken a lot about ExtJS 4. At first especially about the delays of the actual release. Secondly because of the great impression<link http: www.sencha.com blog ext-js-4-developer-preview>Sencha's blog posts made before the release. And now especially about the hard times caused by migrating the Phoenix user interface to ExtJS 4.
And most importantly, we're ready to add new functionality to the user interface, as soon as the migration is complete. We're really looking forward to that!
Rens on behalf of the TYPO3 5.0 UI Team