I'm seeing them side-by-side for the first time. I'm still unsure as to whether or not this was necessary, however, the new wordmark's larger counters & ample kerning would lend itself better to many digital applications, I'd imagine.

I've seen a few opinions beefing with the kerning and implying it's excessive around the Os. I didn't find it jarring the first time I looked at it, and still don't.

Opting for the single-story 'a' is quite a minute change IMO. I don't think it detracts from or emboldens the wordmark in any way. It's the most glaring change as the shape is different - but again, I personally don't find it jarring in the least.

I do think it packs less personality than the original. As the title states, it was done by Eric Olson, the creator of Klavika (the font of the original Facebook wordmark), he must be pleased with the refinements and feels it brings something fresh to the table, it would be interesting to hear his opinion and thought-process on the changes. Many times my opinion on a piece of artwork or design have changed after hearing the creator's word on it. Sometimes for the better, other times...

If anything, hopefully this impresses on Facebook not to reveal their logos in isolation... on a t-shirt. Far too easy for critics to shred it in face of losing their beloved wordmark of Facebook lore :P

Facebook's new logo looks like someone opened up the original logo file without the right font on their system.