currently evaluating windows 8 deployment with SCCM 2012 SP1.
we have used the same procedure to create our image as the one for windows 7
so, we have injected a dutch and french language pack in the image. if I mount the image to check the available languages it shows all three are there (image is win 8 enterprise UK).
however if I lay down the image with sccm, I only see the english language (either via dism /online /get-intl or via the control panel Languages thing)
I just tried to add the dutch language pack after the image was installed and it is now visible.
so the conclusion could be: don't integrate language packs, just install them. but is this a windows 8 specific issue as it worked fine on windows 7?