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The admin bar and global navigation menu will be updated shortly to simplify the navigation as discussed on this post and in these issues: #252 Simplifying the wp-admin bar, #251 Reconfigure the site navigation.
Admin Bar
For the admin bar, if you’re logged out, you’ll see links to log in & register on every page. When you’re logged in, the admin bar has been simplified. The WordPress logo and About menu has been removed, along with the site name, comments, and some other top-level items. If you can write posts on a site, you’ll still see the “+ New” dropdown, and a new dropdown for “Edit”. If you’re a member on multiple sites, the My Sites dropdown has moved to the dropdown under your name.