Western Digital not following the GPL?

So, I needed to update the firmware of my external WD drive today and I found out that WD graciously provides a firmware updating application for Macs as well (http://www.wdc.com/wdproducts/wdsmartwareupdate/firmware.asp?id=wdfMP_Ultra&os=MAC -> "Download now" or http://www.wdc.com/global/webtracking/index.asp?id=1181&url=http://download.wdc.com/fwupdater/Mac/WDFirmwareUpdater.zip for the direct link).

Being the nosy person I am, the first thing I've done was to see inside the application package and guess what:

~/WDFirmwareUpdater.app> find . -iname "*.h" -type f -print | xargs grep "GNU General Public License" ./Contents/Frameworks/WDUIKit.framework/Versions/A/Headers/StillCapturer.h:// it under the terms of the GNU General Public License as published by ./Contents/Frameworks/WDUIKit.framework/Versions/A/Headers/StillCapturer.h:// GNU General Public License for more details. ./Contents/Frameworks/WDUIKit.framework/Versions/A/Headers/StillCapturer.h:// You should have received a copy of the GNU General Public License

So far I haven't found any source bundle from WD for said framework but this looks like an obvious GPL violation to me - and good job with release control there guys, leaving the .svn directories around was just the finishing touch :)