Quick breakdown of what I am seeing:
1. In the back end there used to be one line item, now you can include 5 total line items
2. You can add up to 500 characters into EACH line item - I thought initially it would trigger a warning but upon testing it did not trigger any warnings but this is not the case
What this means:
a. You can have up to 2,500 bytes in your back end generic keyword field / search terms
b. I believe this is a move to create shorter titles , as more than 50% of searches are on mobile and Amazon is working to create a better user experience
c. Lets see if this sticks
rad change - but this could cause some new theories around ranking weights for certain parts of your listings.