The SEO community has noticed some early signs of a possible Google update on February 17th, 2021. Several webmasters have reported a spike in Google bot activities and witnessed ranking fluctuations. SERP tracking tools have also picked up the signals showing high volatility in search engine rankings.
The last confirmed update from Google was the passing ranking update, which started rolling out on February 10, 2021, and ended on February 15, 2021. Since the proximity of this unconfirmed update is closer to the passing ranking update, the SERP volatility is likely to be a set of fixes supporting the findings of the passing ranking update.