The new design was made for a tiny fraction of users and unfortunately for twitter, for Matt Petronzio, a Mashable journalist, who was more than happy to relay the news. This new design looks very much like Facebook with profile picture, cover picture, central column and tabs. Obviously these items are important to Twitter items, but must admit it feels particularly "Facebooky".
By trying to modernize and attract new followers, Twitter has come up with a very unconvincing initiative. In all cases, the redesign is far from arriving to our profiles any soon, it is only a beta test. Everything is still possible, such as keeping the soul and the graphics of the network.