Google has released its June 2025 Core Update, confirming the rollout and setting off the industry's usual scramble to measure ranking volatility across search results.

This is a confirmed update, announced by Google itself — not a fluctuation detected first by third-party tracking tools. That distinction matters. Core updates are broad changes to Google's ranking systems, and Google has long said they are not targeted at any specific category of sites or pages. Each one can still shift traffic significantly for publishers, e-commerce sites, and content-heavy domains in the weeks after rollout.

What makes this particular update unusual is the question attached to it: will it change how AI Overviews behave?

The AI Overviews question

AI Overviews, Google's AI-generated answer summaries that appear above traditional organic results, have been one of the most consequential changes to the search results page in years. Publishers and SEO professionals have been watching closely for any sign that core update logic now feeds, filters, or ranks the sources cited inside those overviews.

According to Marketing4eCommerce's coverage of the rollout, the SEO world is specifically awaiting this update's impact on AI Overviews. That framing reflects a real shift in how the industry reads core updates: the ranking signal is no longer just about position ten blue links — it may also determine which sites get cited as sources in AI-generated answers, and which ones lose that visibility.

To be clear about what is confirmed versus speculated: Google has confirmed the core update itself. Any connection between this update and changes in AI Overview citations, selection, or formatting is, at this stage, community expectation — not a Google statement. Tool-based volatility data from rank trackers, where it appears in the coming days, should be read the same way: as signal, not confirmation.

Why core updates still move markets

Core updates typically run over one to two weeks, and Google historically advises that recoveries, when they come, arrive with the next core update rather than mid-rollout. For site owners, the practical pattern is familiar: traffic dips or spikes in the days after launch, followed by a period of uncertainty while Google finishes rolling out the change across its index.

Different verticals feel these updates differently. YMYL sectors — health, finance, legal — tend to see the sharpest scrutiny because Google's quality systems apply their toughest standards there. E-commerce and affiliate-heavy sites, news publishers, and programmatic content operations all watch each core update as a potential inflection point for their organic traffic.

The AI Overviews angle adds a second layer. Sites that rely on informational query traffic have already reported pressure from AI Overviews absorbing clicks that once went to the top organic results. If this core update changes which sources AI Overviews cite, or how often the overviews themselves trigger, the traffic impact could extend well beyond classic ranking positions.

What to watch now

The monitoring playbook for the next two to three weeks is straightforward:

• Rollout completion. Google typically confirms when a core update finishes. Volatility measured before that point can still shift.
• Ranking tracker data. Tools like Semrush Sensor and MozCast will show whether volatility spikes above baseline during the rollout window — a signal to interpret, not a verdict.
• AI Overview citation changes. Comparing which domains appear as sources in AI Overviews before and after the update will be the key test of whether this core update touches Google's generative layer at all.
• Vertical-specific movement. Health, finance, and e-commerce categories usually diverge in how strongly they react, and those differences will indicate where the update's quality adjustments landed.

For publishers and SEO teams, the immediate task is unchanged by the AI speculation: compare rankings and traffic against pre-update baselines, avoid reactive changes while the rollout is still in progress, and log any AI Overview citation shifts separately from standard ranking movement.

The open question this update may answer — or leave hanging — is whether Google's core ranking systems and its AI Overview sourcing have now converged into a single visibility battleground. The industry will find out as the rollout completes and the first credible datasets on AI Overview citation changes start coming in.