Amenities for economy class:
Hello Kitty tray and utensils for the meals
Headrest covers featuring Hello Kitty characters.
Certain Hello Kitty-themed duty free items only available on those flights
You can ask for playing cards!
Hello Kitty safety cards are cancelled since so many of them accidentally felt into passengers' bags.
There are no more Hello Kitty pillows and blankets, since it took too much manpower to collect them before landing.
In general economy class' Hello Kitty-themed items remain but business class has less items - no more Hello Kitty themed pillows/blankets/printed menus. Only slippers remained!
Here are photos from my EVA Air's inaugural Kaohsiung to Hong Kong flight:
Business Class cabin - no more Hello Kitty decoration

Economy Class cabin - headrest covers
Carfield