Buxp uploaded a new fresh design. From what I've experienced so far, it's much easier for new members to find all of the new earning sections such as view video and complete a survey. Anyhow, I do approve this new design. I also hope to start earning more money from my referrals :)
Neobux uploaded new buttons. Not really a huge improvement but they do give the site a new fresh look.
PPlinx is another site that has experimented with the design the last few monthes. Whole front page was more or less changed when it comes to text and a few new links to social media sites were added.