http://searchengineland.com/coming-s...date-2-2-80848
The next update will target a common webmaster complaint related to the original Panda/Farmer update: sites that scrape and re-publish content and are out-ranking the original source of the content.
?A change has been approved that should help with that issue,? Cutts said.
Google is not constantly scanning for pages that might get hit by its Panda penalty. Instead, Google manually runs that algorithm, which then determines web sites that should be hit by it.
This also means that making changes to a site hit by Panda won?t produce any immediate change in Google. Instead, such changes ? if they are beneficial ? wouldn?t get registered by Google until the next Panda assessment.