Have you heard of something called the Helpful Content Update (HCU)? (We know, we know — even if you spent all of August on vacation, you were probably still flooded with information on what it is, why SEOs love it, how to prepare for it, and future predictions.)
Even if you've been overwhelmed with suggestions and resources, it might be worth it to bookmark Marie Haynes' helpful article. Still, so far, it looks like this update could've had the title 'Much Ado About Nothing.'. The update finished rolling out on the 9th September.
Overall, the HCU guidance is anything but new, and the one core tip is really in the name: make your content helpful for your readers. Aleyda Solis updated her Quality and Helpfulness spreadsheet to include all the new HCU guidance when evaluating content.
So what to do if you've been impacted by the update? This tweet from Lyndon sums it all up.