(1) Merging of wordpress and wordpress mu.
(2)Custom Post and Custom Taxonomies.
(3) Featured image on Posts page.
(4) Custom menu management feature.
(5) Custom header and background APIs.
(6) Custom Username and password.
(8) New login form with wp_login_form();
(9) Custom author page.
(10) Introduce child theme concept.
(11)Post editor style using