I am seeing some early chatter and signals that there may be another, currently unconfirmed, Google search ranking algorithm update happening. It seems to have started yesterday, July 23rd and continuing throughout today, July 24th. You may see it yourself if you compare your real time Google traffic to a normal day or you slice and dice your traffic by hour.
I am seeing both chatter and discussions about this within the SEO community, both on WebmasterWorld and Black Hat World and some on Twitter as well. Plus some of the tools are showing big changes as of this morning.
Here is some of the SEO chatter:
And here are some of the tracking tools showing changes so far, some have not been updated yet this morning, so I will add more later:
Do you see changes on your end yet?
Forum discussion at WebmasterWorld and Black Hat World.