I think the Starbucks logo redesign is a fairly smart choice.
It isn't a massive overhaul, and keeps what made it unique and recognizable, and actually manages to make that portion (the siren/mermaid) more prominent.
As it stand, many people in the US understand what Starbucks is and what it looks like, so removing the name is essentially just getting rid of something that is not necessarily needed all that much anymore.
It's akin to a name-tag on the first day of school. Eventually you won't need it anymore because anyone who will be bothered to remember your name, will know it without that reminded there. In this case, Starbucks has decided to leave the first day of school behind.