Say goodbye to the typical Google Panda updates. Panda is now baked in as one of Google's core ranking algorithm.

Google Panda, one of Google’s most significant spam-fighting algorithms, launched in February 2011, is officially part of Google’s core ranking algorithm. It is unclear exactly when this happened; we at Search Engine Land are trying to find out.
Jennifer Slegg posted a Panda guide that was vetted by Google’s PR team, and part of that included a statement that said Panda is now part of Google’s core ranking algorithm. Here is that statement: