The International Air Transport Association is recommending shrinking the size of allowed carry-on bags to a size of 21.5 inches tall by 13.5 inches wide and 7.5 inches deep. That is about 20% smaller than the standard on most major airlines today.
UPDATE: There have been so many objections that the plans are currently are on hold.
They are trying to pitch the message as an advantage to passengers. It’s not clear how it could possibly be a passenger advantage. The only thing it makes easier is deciding that you need to check a bag. The biggest impact is probably on the road warrior who lives by the carry-on bag.
Eight major international carriers have adopted the guidelines; including Air China, Avianca, Azul, Cathay Pacific, China Southern, Emirates, Lufthansa and Qatar. Most international passengers already make the decision to check baggage so there will be less of an impact on them.