Google has announced on twitter a core update to its algorthims that drive advertising placement and serach result rankings.  As per previous updates, you can expect to see some volatility in some sectors for a while.  We will be closely monitoring the impact of the update, so feel feel to reach out if you have any questions about how it may impact your site.

The announcement can be found here on twitter https://twitter.com/searchliaison/status/1216752087515586560