As best I can tell, chapter 4 says certain conferences of bishops requested the faculty of permitting the host to be received in the hand and the chapter lays out the stipulaions for that to be permissable... chiefly, a proper reverence.
Yes, but MD said the same thing: that dioceses may try communion in hand on a local case by case basis. IC did not liberalize MD, if anything it toughened the conditions by spelling them out.