it's really quite simple. and nothing has really changed.
you still have the "artistic score". 10.0 is still the highest score for beautiful gymnastics. we will call it a 9.0 for this discussion.
then you have the 2nd score which we'll call the difficulty score. like diving and trampoline. all the skills have a numerical value. so after they add up your difficulty, or what you hear them refer to it as a "start value", let's say you end up with a 5.5 in difficulty.
so you add 9.0 & 5.5 and your total becomes a 14.5.
now, hopefully no one will come along and complicate this. the young kids need to understand that the "artistic" score is still the most important.