There is no change in this edition.
If you compare 15.1. from 2nd edition and whole 15.1. form this edition this is the same text.
This edition clears some sentences (adding extra numbers 15.1.1 till 15.1.8 makes it easier to discuss about rules). But you must remember that some sentences are just redundant. Wrote just to emphasis important rules.
So you are right 15.1.1 is repeated at 15.1.8 (like in 2nd edition)
Thank you for the clarification.