ok this is just a small bug in the texture.xpr but the images for the homebutton-6a.png and the homebutton-6-shadow.png are switched. I only found this by helping someone fix a mod they had done and couldnt figure out why the homebutton-6-shadow.png would show up first and the homebutton-6a.png would fade in. Then i opened up the texture.xpr in xbmc skin editor and had a look. I know this does not really matter because its not normally used but they are still backwards.
P.S. I'm looking foward to the 1.0 release but no rush take your time