Penguin 4.0 Update was released over the weekend. This might be a good thing for you because it might help you recover from a penalty. Since you may have been waiting a long time for Penguin. It’s now part of the core algorithm, so the means it’s now it real-time. So every time your site is crawled and indexed, the Penguin rules will also be applied.
If you notice a change in traffic in your Analytics, it might be an indication of Penguin 4.0. Do clean up spammy links to your site.