A service pack has been published in the download section of Kinetis Design Studio on http://www.freescale.com/kds which adds bare metal (no Processor Expert, no Kinetis SDK) support for the following Kinetis M devices:
The update is available for KDS v3.0.0 for Linux, Mac and Window:
The download is available for each of the host operating systems supported by KDS:
The downloaded archive (zip file) contains the release notes and the Eclipse update which gets installed into KDS using the menu Help > Install New software and then using the zip file inside the archive (unpack the archive first).