Folks who have cruised within the last month may already know this...but they were not doing this in March...so it was a first for us.
You now remove your "colored" luggage tags from your suitcase and place BLUE plastic tags with numbers on them before you put your luggage out on the last night.
Then they call by NUMBERS now (VIP and early flights being number 1). Your luggage is lined up by numbers in the warehouse.
This was in New Orleans. Not sure if the other ports have converted yet. I guess they a) ran out of colors b) had problems with passengers knowing pink from salmon.