The Qt4 version of Polyester is coming along nicely, is still too unstable for a first release but i hope an alpha isn’t too far.
Here you can see a KDE4 beta1 screenshot as it appears with the Polyester theme.

As you can see it won’t be exactly identical to Polyester1, because I want to experiment some of the new goodies offered by qt4, so maybe in the future it will be even more aesthetical changes, i don’t know.

If you are impatient to try it there is always the bazaar repository on launchpad.net/polyester