The new ITA threaded HTII BB units don't come with any spacers. cups go straight on to the chased BB Shell. No spacers on the crank spindle either, just like a standard BSA setup.
YMMV, but that's how my parts came, and how my LBS installed it for me.
some progress, tomorrow evening hopefully more. anyone knows if ITA HTII BB uses the same spacers as BSA?