I do not think that we need a new Emancipation Proclamation. Things are fine the way they are and a new one would take away the significance of the one we currently have. Everyone in the United States knows they have freedom to do as they please as long as they abide by laws, so I do not see why we would need to make a new Emancipation Proclamation.
The whole point of the Emancipation Proclamation was to end slavery. This was completed. As far as African-Americans current social standing, this definitely varies from person to person, region to region, but the opportunity exists for every ethnic group to rise socially. There are no ethnic groups currently enslaved to another and therefore there is no need for another Emancipation Proclamation.
Since Abraham Lincoln passed the Emancipation Proclamation, the African-American culture in the United States has grown immensely stronger, and finally through the last few decades, more universally accepted. We now have an African-American President among the more notable success stories derived from a sinister misstep in our nation's history. The respect for this community has grown over time, and in addition programs have been put in place such as affirmative action that make the idea of a "New Emancipation Proclamation" antiquated and unnecessary at best.
In the days of slavery, black people used as slaves, were truly looked upon as subservient individuals, even not human. Something had to be done, and it had to be done with large authority. Today there is no situation even remotely close to back then. Society as a whole is a very balanced place currently.