A professional writer at HufPo offers a thorough analysis on the Facebook Facelift. Personally I think the changes are awful, but the article correctly points out a positive: it helped me break my Facebook addiction. But now I'm starting to get a sugary craving for social media, so Twitter is becoming my methadone.
From a marketing management persepctive, New Coke is an apt comparison. Zuckerberg's team seems to have forgotten the lessons from New Coke:

[A majority of consumers accepted the change at first, according to their own market research] The research indicated great support for the new formula, but it also registered a small but vocal opposition. In light of the overwhelming positives, this segment was ignored. That was a mistake since it indicated the possibility of a major backlash among consumers, which is precisely what happened.

Source: The Power of Your Brand, a Public Relations Morality Tale
About Twitter
Read the Article at HuffingtonPost