The new language was to get away from the fact that the GK using his foot would be a send off, but using his hand was nothing. The amendment was to make clear that if the offense depends upon the GK using his hand, it cannot be misconduct, but if it would be an offense from any part of the body, it is still a caution/send-off.
EDIT: That is the distinction made in the explanation on page 161:
Amended text
The goalkeeper has the same restrictions on handling the ball as any other player outside the penalty area. If the goalkeeper handles the ball inside their penalty area when not permitted to do so, an indirect free kick is awarded but there is no disciplinary sanction. However, if the offence is playing the ball a second time (with or without the hand/arm) after a restart before it touches another player, the goalkeeper must be sanctioned if the offence stops a promising attack or denies an opponent or the opposing team a goal or an obvious goal-scoring opportunity.
Explanation
If a goalkeeper deliberately plays the ball a second time at a restart (before it has touched another player) and stops a promising attack or denies a goal or an obvious goal-scoring opportunity, the goalkeeper should be cautioned (YC) or sent off (RC). This applies even if the second touch was with the hand/arm, as the offence is not ‘handball’ but ‘illegally’ playing the ball a second time.