A Google Algorithm Update Brewing Now?

Google Update Brewing

I received a few emails yesterday, saw some comments on this site and on WebmasterWorld and the tools are still pretty high in tracking volatility - there may be a Google search algorithm update brewing right now. It is way early, the SEO chatter at these levels do not convince me fully that there is an update versus a blip for a couple of hours in the search results.

Here are the very few comments that people sent me or posted in the forums around a possible Google update starting sometime yesterday:

I'm convinced on June 25 a massive algo update happened. I've seen major shifts on 3 different websites. Terms that were once getting them top listed no longer do.
What's more, older articles from the web seem to be outranking newer, more substantive content.
I did a random check on several websites and talked to two webmasters. They've observed the same thing.
Something is absolutely going on.

This weekend and today I feel a shuffle of Google results with a lot of spam into the light.
1,2,3 position = fixed brand positions, after that a lot of garbage.
Many of my product pages seem to be sandboxed. I cannot find them anywhere!

Massive, massive update. Looking into pages/KWs affected right now, record day yesterday for sales/leads.

Again, the chatter from our SEO community is very quiet right now but that might change or it might not. I'll keep an eye on it.

Not all the tracking tools are showing massive changes. I mean Mozcast has been overheating for the past couple months now, SERPMetrics seems to have declined a bit, Algoroo is somewhat calm now, Accuranker shows activity, RankRanger is showing major swings and SEMRush is also showing major changes. Here are those charts:

Mozcast: