My gut reaction is that this new logo is strictly worse than the old one. This is my first time seeing either of the logos. Can someone with a graphic arts background explain why the LoC is so attracted to this new design (after only 8 years with the previous one)?
The current librarian (confirmed in 2016) is a bit of a new broom, and is the first to serve under a term-limit. Previous librarians served for life, and the last one refused to understand computers.