Does bottled pop expire

Expiration date is a legal requirement and having it on the label or not depends on the country where the product is sold. It also depends on product composition and storage conditions of course. Yoghurt has a very short shelf lifes while soft drinks have very long ones. I have tasted soft drinks several years old which were OK. But some flavours spoil real fast when exposed to sun light. Concentrates used to make soft drink may have shelf lifes as short as 60 days.