Did we just have a rolling Penguin update?

[EugeneF]

I just had a page/keyword that had an algorithmic penalty jump in rank significantly.  Once was ranked 3, ranked 80+ since October 2012, overnight it jumped to 31.

[Francisco_Meza]

You should read this: http://searchengineland.com/google-panda-to-be-integrated-into-the-search-algorithm-panda-everflux-151528

Panda is integrating with the G algoithm.

[Doc_Sheldon]

I think the OP is referring specifically to Penguin, Francisco. I have seen quite a lot of fluctuation yesterday and today, as well, particularly with my US clients. (AU seems quite stable). Given the amount of variance, it wouldn't surprise me if something was going on. Maybe we'll see some confirmation one way or the other tomorrow. Barry S and Danny S both usually put the question to the folks at the 'Plex.

[EugeneF]

Yes, I was specifically referring to Penguin.  I am seeing uplift in rankings for specific keyword phrases that dropped last October.  These keywords had backlinks disavowed in March 2013.