Is it me, or do the people at PepsiCo enjoy introducing new can designs on, oh, a bi-annual basis or something? (Yes, I'm aware how mind-bogglingly not important this is, but I've been trying to describe it to people, and couldn't quickly find examples with Google.) I bought more of my only habitual drug today, and noticed they did it again. Old on the left, new on the right.
If you ask me, the new one looks like a prop from the set of Back to the Future II.