I noticed huge jump in Yahoo/Bing(proven to mirror Google) and big movement in Google.
So i pmed a few people who also manage a lot of sites and they are experiencing the same. I did a Google search for the past 24 hours with Penguin related keywords and there are lots of threads/posts of people experiencing movement.
Remember, Google doesn't update all of their datacentres at once. They release updates to a select few, then to another part of the world etc etc
So if you're not seeing movement yet, you may do soon. I'm in the UK and others in the UK are showing big movement.