The new MkS version that was scheduled is taking time to polishing, for this reason it's a little delayed.
A new package is available for (x)ubuntu Jaunty, you can find it on the wiki LinuxPackages page.
It's to be noted that all fix regarding MkS and Qt 4.5.x are not available in this package, it's just the same intrepid package rebuilt for jaunty, so some glitches can appear.
I will update the page as soon as new packages will be updated, stay tuned by regulary check this page.
Happy coding ;)