Is there any plans for the graphical layout of the web site when it will get out of beta phase ?
Sites get their designs when they graduate out of beta, so I'm assuming that your question is equivalent to "When will we graduate?"
Here are some of this site's statistics, and here's how it compares to other sites. Along with those, I also strongly recommend reading the blog posts When will my site graduate? and Does this site have a chance of succeeding?
My personal reccomendation: more questions and more answers, please!